Question

what's the value of x
${x}^{2} - {15}^{2} = {8}^{2}$
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Answer 1

${x}^{2} - {15}^{2} = {8}^{2} \\ \\ {x}^{2} - 225 = 64 \\ \\ {x}^{2} = 64 + 225 \\ \\ {x}^{2} = 289 \\ \\ x = 17$

Answer 2

The value of X would be plus and minus 17 for the fact you got the square root of 289.