Quadratic Equations Algebra

Solve: -5x² = -50

• ± 5

• ± 10

• ± √10

• -10

The table models the height of a bounced ball in relation to the distance it has traveled. Write an equation for the curve of best fit, then find the approximate height of the ball after 18 seconds.

• 14.2 feet

• 4.12 feet

• 14 feet

• 3.32 feet

The solutions of the quadratic equation
x²-5x+6=0 are

• x=1 or x=-6

• x=3 or x=2

• x=-3 or x= 2

• x=-1 or x=6

To complete the perfect square trinomial in the expression x²-22x+_____, we need to add

• 11

• 44

• 121

• 144

• ±81
• ±9
• ±3
• No real solution

• ±23.25
• ±5
• ±25
• No real solution

Convert x²-6x+9 to factored form and identify the solution.

• (x-3)(x-3); x=3

• (x+3)(x+3); x=-3

• (x+4)(x+2); x=-4, -2

• Not factorable

In the expression 4x²-5x+9 the leading coefficient is

• 9

• -5

• -4

• 4

What are the solutions to 5( x - 3 )² = 45?

• x = 6 and x = 0

• x = -3 and x = 45

• x = -6.71 and x = 6.71

• x = -3 and x = 3

If the rocket was at a height of 5 feet at 1 seconds, at what other time was the rocket at a height of 5 feet?

• It was never at 5 feet again.

• 6 seconds

• 5 sconds

• 3 seconds