loisfriedman117
07.11.2019 •
Mathematics
Solve the equation by taking the square root 4(x+1)^2=100
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Ответ:
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
Ответ:
Step-by-step explanation: