Unit 7 Review - Solving Quadratic Equations

• x = -12

• x = -4

• x = -2

• x = -6

• {-5, -1.5}

• {2.5, 3}

• {1.5, 5}

• {-3, -2.5}

Mathematical Equivalence

ON

• x = -6

• x = 4

• x = -1.8

• x = 1.2

• -74 and 88

• -2 and 16

• -88 and 74

• -16 and 2

• 7 ft

• 16 ft

• 8 ft

• 14 ft

Answer explanation

We can ignore the first two sentences of this word problem - they are just explaining where the equation has come from.

The problem is asking for the width of the trampoline. Notice that the equation uses the variable "w". So you will need to solve the equation by graphing, factoring, quadratic formula, or completing the square to see what the solutions are.

Out of the two solutions, only one of them is realistic as a width in feet. (Can you have a trampoline that is negative feet wide?)

• 32

• 13

• 20

• 16

Mathematical Equivalence

ON

• x = -4/3 and x = 7

• x = -7 and x = 4/3

• x = -1/3 and x = 3

• x = -3 and x = 1/3