Question

If (2x+7)²=81 then find the value of x​

Answer 1

Answer:

ise the formula

Step-by-step explanation:

(4x)® + 14x + 49 =81

4x + 14x -32 =0

then a quadratic equations

Answer 2

$\Huge{\bold{\mathrm {\underline{\purple{Hello!}}}}}$

GIVEN:

• ${(2x + 7)}^{2} = 81$

SOLUTION:

${(2x + 7)}^{2} = 81 \\ = > 2x + 7 = 9 \: \: \: \: \: \: \: \: \: \: \: \: \: \\ = > 2x = 2 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \boxed{ x=2} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

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