Question

(2x+8y)
$(2x + 8y) =$

Answer 1

$we \: know\\ (x + y) {}^{2} = {x}^{2} + {y}^{2} + 2xy \\ so \\ (2x + 8y) {}^{2} = 4x {}^{2} + 64 {y}^{2} + 32xy$

mark as brainliest if helped