Question

Find the value of x^2 - 8y^3 - 36xy - 216 when X = 2y + 6

Answer 1

the value of
$x \times x - 8ycube - 36xy - 216when \\ x = 2y + 6 \\ x { }^{2} - 8y3 - 36xy - 216whenx = 2y + 6 \\ x {}^{2} - 512 y\: \ \times : 2y- 36xy - 216when + 6 \\ x {}^{2} - 1024y - 36y - 216when + 6 \\ x {}^{2} - 1060 - 216when + 6 \\ x {}^{2} - 1276when + 6 \\ x {}^{2} - 1276 + 6 \\ x {}^{2} - 127$