kaylahb064 kaylahb064

07-11-2019
Mathematics

contestada

solve the equation by taking the square root 4(x+1)^2=100

Respuesta :

ghanami ghanami

07-11-2019

Answer:

Step-by-step explanation:

4(x+1)²=100

(x+1)²= 5²

(x+1)²- 5² = 0

(x+1-5)(x+1+5) = 0 by identity : a² - b ² = (a - b) (a+b)

(x - 4 ) (x+6) =0

x - 4 = 0 or x+6 = 0

x = 4 or x = - 6

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