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Mathematics
9th -
12thgrade
Unit 3 Review: Solving Quadratic Equations
15 questions
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- 1. Multiple ChoiceSolve by factoring.
x2 + 15x + 26 = 0x = 7, 4x = 2, 13x = -2, -13x = -7, -4 - 2. Multiple ChoiceSolve.
2(2x - 4)2 = 32x = 4x = 10x = -2x = 0, 4 - 3. Multiple ChoiceSolve by factoring.
0 = 2x2 - x - 28x = 4, -7/2x = 8, -7x = -8, 7x = -4, 7/2 - 4. Multiple ChoiceSolve by factoring.
x2 - 10x + 22 = -2x = 5, -1x = 6, 4x = 0, 3x = 3 - 5. Multiple ChoiceSolve.
12x2 + 50 = 2x = 4x = 2x = ± 2x = ± 2i - 6. Multiple ChoiceSimplify
8i(-5i + 7)-40i2 + 56i50i2 + 56i40 + 56i-40 + 56i - 7. Multiple ChoiceSimplify.
(9i - 6)(8i + 12)-144 + 60i72i2 + 60i - 7260i132i2 - 72 - 8. Multiple ChoiceWhat number completes the square of the following expression?
x2 - 12x-3636-66 - 9. Multiple ChoiceSolve.
8x2 - 4x = 18(-1 ± √22)/4(4 ± √13)/16(-4 ± √30)/16(1 ± √37)/4 - 10. Multiple ChoiceSolve.
x2 + 11x = -30x = 5, 6x = -5, -6x = 10, 3x = -10, -3 - 11. Multiple ChoiceUse the discriminant to determine how many and the type of solutions your will find.
0 = 2x2 - 8x + 82 real solutions1 real solution2 imaginary solutions1 imaginary solution - 12. Multiple ChoiceWhat number completes the square of the following expression?
x2 + 5x25/225/45/225 - 13. Multiple ChoiceSolve and simplify
9x2 - 11 = 6x(1 ± 2√3)/3(6 ± 5√2)/81(-3 ± 2√7)/81no solution - 14. Multiple ChoiceSolve.
6(2x + 7)2 = 54x = -2x = 2x = -2, -5x = 0, 2 - 15. Multiple ChoiceCreate the quadratic equation, in standard form, that has the following solution...
x = (-1 ± i√35)/63x2 + x + 73x2 + x + 33x2 - x + 33x2 + x - 2 - Answer choicesTagsAnswer choicesTags