Question

( x +4) ^2 + x ^2 = ( x +6)^3
find x

Answer 1

Answer:

${(x + 4)}^{2} + {x}^{2} = {(x + 6)}^{3}$

${x}^{2} + 16 + 8x + {x}^{2} = {x}^{3} + 216 + 108x + {18x}^{2}$

${2x}^{2} + 8x + 16 = {x}^{3} + 216 + {18x}^{2} + 108x$