4y2 - 256 = 0 Answer??

4y2 - 256 = 0 answer??

 

Answer:

y = 8 or y = -8

Step-by-step explanation:

{4y}^{2} - 256 = 0

Transpose 256 and change its sign

{4y}^{2} = 256

Divide both sides by 4

\frac{4 {y}^{2} }{4} = \frac{256}{4}

{y}^{2} = 64

Get the square root of 64

y = \sqrt{64}

y = 8 \: or \: y = - 8


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