Question

solve x^2+12x-324=0​

Answer 1

Answer:

${x}^{2} + 12x - 324 = 0$

${x}^{2} + 12x = 324$

Add 36 on both sides

${x}^{2} + 12x + 36 = 324 + 36$

${(x + 6)}^{2} = 360$

Taking square root on both sides

$x + 6 = + - \sqrt{360}$

$x + 6 = + - 6 \sqrt{10}$

$x = 6 \sqrt{10} - 6$

OR

$x = - 6 \sqrt{10} - 6$

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