2√4^2x^2+3=256

2√4^2x^2+3=256

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1 Answer

2√42x²+3=256.

Divide through by 2:

√42x²+3=128.

Take logs to base 2 of both sides:

(2x2+3)log2(√4)=7, log2(√4)=log2(2)=1,

2x2+3=7, 2x2=4, x2=2, x=±√2.

by Top Rated User (1.2m points)

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