emmarousey24
Answered

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Question Category: Solving Quadratic Equations by Factoring Select the correct answer. Find the solution(s) for x in the equation below. x^2 - 9x - 20 = 0 A)x = 4; x = -5 B)x = -4; x = 5 C)x = 4; x = 5 D)x = -4; x = -5

Sagot :

desaniamiya101

Answer: x = 4; x = 5

Step-by-step explanation:

The directions specify to solve by factoring

x^2 - 9x + 20 = 0

To factor, find two numbers that add to -9 and multiply to 20

-5 and -4 work

-5 + (-4) = -9

-5 * -4 = 20

(x - 4)(x - 5) = 0

x = 4, x =5

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