zschaeffer zschaeffer

16-08-2019
Mathematics

contestada

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

Respuesta :

ghanami ghanami

16-08-2019

Answer:

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)

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