Question

Solve the quadratic equation.
${(2y + 3)}^{2} = 81$
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Answer 1

Answer:

$y = 3$

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Answer 2

Answer:

$(2y + 3) {}^{2} = 81 \\ 4y {}^{2} + 9 + 12y = 81 \\ 4y {}^{2} + 12y = 81 - 9 \\ 4y {}^{2} + 12y = 72 \\ 4y {}^{2} + 12y - 72 = 0$

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