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Write your answer as a decimal rounded to 2 places.\u003Cbr>1) 25x2 + 5x-2 2) 8x2 = -(16x + 6)\u003Cbr>3) 8x2 = -(10x-3) 4) x(9x-27) = -20\u003Cbr>5) 5x2-8x-4 6) 8x2-18x + 4\u003Cbr>7) -3x2-11x-10 8) 3x2 + 13x + 12\u003Cbr>9) x(-5x + 15) = 10 10) 12x2 = -(-23x + 10) |  |  |  | 1.\u003Cbr>2.\u003Cbr>3.\u003Cbr>4.\u003Cbr>5.\u003Cbr>6.\u003Cbr>7.\u003Cbr>8.\u003Cbr>9.\u003Cbr>10. |  |  | Answers |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |\n| 1-10 | 90 | 80 | 70 |  | 60 | 50 |  | 40 | 30 | 20 | 10 | 0 |\n\n[Math](Math www.CommonCoreSheets.com 9)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 9)[ 9](Math www.CommonCoreSheets.com 9)  \nSolving Quadratic Equations  \nName: Answer Key  \n\n| Solve each problem. Write your answer as a decimal rounded to 2 places. |  |  |  |  |  | Answers 1.  0.20 , -0.40  2.  -0.50 , -1.50  3.  0.25 , -1.50  4.  1.67 , 1.33  5.  2.00 , -0.40  6.  2.00 , 0.25  7.  -2.00 , -1.67  8.  -1.33 , -3.00  9.  1.00 , 2.00  10.  1.25 , 0.67  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| 1) 25x2 + 5x-2\u003Cbr>-5+- 52-4(25)(-2) \u003Cbr>-5 ± 15\u003Cbr>\u003Cbr>50\u003Cbr> 1 x+ = 5\u003Cbr> -2 x- = 5\u003Cbr>3) 8x2 = -(10x-3)\u003Cbr>-10+- 102-4(8)(-3) \u003Cbr>-10 ± 14\u003Cbr>x+\u003Cbr>16  1 = 4 -3\u003Cbr>\u003Cbr>x- = 2\u003Cbr>5) 5x2-8x-4\u003Cbr>8+- -82-4(5)(-4) \u003Cbr>8 ± 12\u003Cbr>\u003Cbr>10\u003Cbr> 2 x+ = 1\u003Cbr> -2 x- = 5\u003Cbr>7) -3x2-11x-10\u003Cbr>11+- -112-4(-3)(-10) \u003Cbr>11 ± 1\u003Cbr>\u003Cbr>-6\u003Cbr> 2 x+ = -1\u003Cbr> 5  x- = -3\u003Cbr>9) x(-5x + 15) = 10\u003Cbr>-15+- 152-4(-5)(-10) \u003Cbr>-15 ± 5\u003Cbr>\u003Cbr>-10\u003Cbr>-1 x+ = -1\u003Cbr> -2 x- = -1 | 2) 8x2 = -(16x + 6)\u003Cbr>-16+- 162-4(8)(6) \u003Cbr>-16 ± 8 |  |  |  |  |  |  |  |  |  |  |  |  |\n|  | x+ | 16\u003Cbr>-1 = 2 -3 |  |  |  |  |  |  |  |  |  |  |  |\n|  | x- = 2\u003Cbr>4) x(9x-27) = -20\u003Cbr>27+- -272-4(9)(20) \u003Cbr>27 ± 3\u003Cbr>\u003Cbr>18\u003Cbr> 5 x+ = 3\u003Cbr>4 x- = 3\u003Cbr>6) 8x2-18x + 4\u003Cbr>18+- -182-4(8)(4) \u003Cbr>18 ± 14\u003Cbr>\u003Cbr>16\u003Cbr> 2 x+ = 1\u003Cbr> 1 x- = 4\u003Cbr>8) 3x2 + 13x + 12\u003Cbr>-13+- 132-4(3)(12) \u003Cbr>-13 ± 5\u003Cbr>\u003Cbr>6\u003Cbr> -4 x+ = 3\u003Cbr>-3 x- = 1\u003Cbr>10) 12x2 = -(-23x + 10)\u003Cbr>23+- -232-4(12)(10) \u003Cbr>23 ± 7\u003Cbr>\u003Cbr>24\u003Cbr> 5 x+ = 4\u003Cbr> 2 x- = 3 |  |  |  |  |  |  |  |  |  |  |  |  |\n| 1-10 |  |  | 90 | 80 | 70 |  | 60 | 50 | 40 | 30 | 20 | 10 | 0 |\n\n[Math](Math www.CommonCoreSheets.com 9)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 9)[ 9](Math www.CommonCoreSheets.com 9)  \nSolving Quadratic Equations  \nName:  \n\n| Solve each problem. Write your answer as a decimal rounded to 2 places.\u003Cbr>1) 25x2 + 5x-2 2) 8x2 = -(16x + 6)\u003Cbr>3) 8x2 = -(10x-3) 4) x(9x-27) = -20\u003Cbr>5) 5x2-8x-4 6) 8x2-18x + 4 | Answers\u003Cbr>1.  \u003Cbr>2.  \u003Cbr>3.  \u003Cbr>4.  \u003Cbr>5.  \u003Cbr>6.   |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- |\n| 1-6 |  | 83 | 67 | 50 | 33 | 17 | 0 |\n\nMath  \nModified  \n[www.CommonCoreSheets.com](www.CommonCoreSheets.com)  \n9","cbCaidioVWFb0MUc","https://ap.wps.com/l/cbCaidioVWFb0MUc","pdf",77971,"English","# Problems\n## Solution set (answers)","[{\"question\":\"What format are answers required to be in?\",\"answer\":\"Answers must be written as decimals rounded to 2 places.\"},{\"question\":\"How many quadratic problems are covered in this answer key?\",\"answer\":\"The answer key covers 10 quadratic equation problems.\"},{\"question\":\"Do the problems always have one solution?\",\"answer\":\"Many equations yield two solutions, and the answer key lists both roots rounded to 2 decimal places.\"}]","Solving Quadratic Equations - Answer Key | PDF",1790773147]