Question

find x in equation

${(3x)}^{2} = 81$
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Answer 1

$\huge\sf\red{\underline{Answer}}$

${(3x)}^{2} = 81 \\ = > {(3x)}^{2} = {(9)}^{2} [∵{(9)}^{2}=9×9=81 ]$

Equating the powers, we get,

$3x = 9 \\ = > x = \frac{9}{3} \\ = > x = \huge\sf\red{\underline{3}}$

Answer 2

Answer: : 1+2, 1/3+1/4, 2^3 * 2^2

(x+1)(x+2) (Simplify Example), 2x^2+2y @ x=5, y=3 (Evaluate Example)

y=x^2+1 (Graph Example), 4x+2=2(x+6)

Step-by-step explanation: mrk me as brainliest