Angela122
16.08.2019 •
Mathematics
2x2 + 8x = 10 is equivalent to which of the following?
a. ( x + 2)²=9
b. (2x + 4)²= 10
c. (x + 4)²= 10
d. (x+ 8)²= 18
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Ответ:
A. ( x + 2)²=9
Step-by-step explanation:
2x2 + 8x = 10 equivalent to :
x²+4x =5 (divid by2)
(x²+4x+4 ) - 4=5
(x +2)² - 4 = 5
(x +2)² =9...(add 4)
Ответ:
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Step-by-step explanation:
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