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Mathematics
9th -
11thgrade
Solving Quadratics (Factor, SquareRoot & Quadratic Formula)
20 questions
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- 1. Multiple ChoiceSolve by factoring: x2 - 9x + 20 = 0x = -4 and x = -5x = 20 and x = -9x = 4 and x = 5x = -4 and x = 5
- 2. Multiple ChoiceFactor: 49x2 - 100(49x + 100)(x - 1)(7x - 10)(7x + 10)(49x - 10)(x + 10)(7x -10)(7x - 10)
- 3. Multiple ChoiceFactor: 3x2- 6x - 24(3x - 8)(x + 3)(3x + 4)(x - 6)3(x - 2)(x + 4)3(x + 2)(x - 4)
- 4. Multiple Choice7x2 - 26x - 8 = 0x = -1 and x = -7/8x = 4 and x = -2/7x = -4 and x = 2/7x = 4 and x = -7/2
- 5. Multiple Choice-5x2 = -50± 5± 10± √10-10
- 6. Multiple Choice(x + 1) 2 = 25± 54 or -6-4 or 6± 4
- 7. Multiple ChoiceSolve by taking square roots:
5b2 - 4 = 41b = 9, b = -9b = 3, b = -3b = 8, b = -8no solution - 8. Multiple ChoiceSolve
(x+3)2-5 = 9-3±√143±√14±11±5 - 9. Multiple ChoiceSolve 14 - x² = 17x = ±1.73x = 3no solutionx = -3
- 10. Multiple ChoiceIdentify the 'a' value:
y = 16x2 - 8x - 24168-8-24 - 11. Multiple ChoiceIdentify the 'b' value:
y = 16x2 - 8x - 2416-88-24 - 12. Multiple ChoiceIdentify the 'c' value:
y = 16x2 - 8x - 2416-824-24 - 13. Multiple ChoiceThe discriminant isax2 + bx + cb - 4acb2 - 4acb2 + 4ac
- 14. Multiple ChoiceWhat is this formula?This is the speed of light formula.This is the quadratic formula.This is the zero product property.This is scary.
- 15. Multiple ChoiceWhat is the following called? b2- 4acAxis of symmetryQuadratic FormulaVertexDiscriminant
- 16. Multiple ChoiceDetermine the values of
a, b, and c for
the quadratic equation:
4x2 – 8x = 3
*remember right side should =0a = 4, b = -8, c = 3a = 4, b =-8, c =-3a = 4, b = 8, c = 3a = 4, b = 8, c = -3 - 17. Multiple ChoiceWhat should you do first in solving this equation?
x2 + 6x - 13 = 3Get factored formWrite down: a=1, b=6, c=-13Make the equation equal 0 by subtracting 3 on each sideType it all in a calculator. - 18. Multiple ChoiceSolve
2x2 + 7x - 15 = 0-1.5 or 5No Solution-5 or 1.50.7 or 5 - 19. Multiple ChoiceSolve for x. Round to the nearest hundredth if necessary.
3x2 = 16x + 12x = -.67, 6x = -6, .67x = 3.33, 18x = -3.33, 18 - 20. Multiple ChoiceSolve for x. Round to the nearest hundredth if necessary.
2x2 = -x + 3x = -1, 1.5x = 1.5, -1x = 1, 1.5x = -1.5, 1 - Answer choicesTagsAnswer choicesTags