Question

( a-4 b)^2-8 ab-17 b

Answer 1

${(a - 4b)}^{2} - 8ab - 17b = {a}^{2} - 8ab + {16b}^{2} - 8ab - 17b = {a}^{2} - 16ab + {16b}^{2} - 17b$