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#### Online Quiz (WorksheetABCD)

Questions Per Quiz = 2 4 6 8 10

The quadratic equation cannot be factored easily, and completing the square will result in many fractions. So, the equation can be solved using the quadratic formula.

Directions: Solve the following problems using quadratic formula and approximate the solution or round your solutions to the nearest hundredth.:
 5x2 - 3 = 4x x2 -12x - 14 = 0 5y2 - 7 = 11y 9t2 + 3t = 5 2x2 + 5 = 15 7a2 - 8 = 13 -6y2 + 15 = -15 4z2 + 7 = 12 3(x+3)2 = 39 5(y-1)2 = 40 2(x+4)2 = 18 4(z-5)2 = 32

 Q 1: Solve, x2 - x - 6 = 0. -3 and 23 and 2-3 and -23 and -2 Q 2: Solve, x2 + 5x + 6 = 0.-3 and -2-3 and 23 and -23 and 2 Q 3: Solve, 2x2 + 13x + 15 = 0.-3/2 and -53/5 and -55/2 and 5-5/3 and 5 Q 4: Solve, x2 - x - 20 = 0.4 and -5-4 and -5-4 and 54 and 5 Q 5: Solve, x2 - 11x + 28 = 0.4 and 7-4 and 7-4 and -74 and -7 Q 6: Solve, 3x2 - 4x - 6 = 0.2/3 and -3-2/3 and 3-2/3 and -32/3 and 3 Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!