Question

(5ab-4b) to the power 2

Answer 1

25a^2b^2+16b^2-40ab^2

Answer 2

Heya user, Here is Your Answer

$(5ab - 4b) {}^{2} \\ expand \: using \: (a - b) {}^{2} = a {}^{2} - 2ab + {b}^{2} \\ (5ab) {}^{2} - 2(5ab)(4b) + (4b) {}^{2} \\ to \: raise \: a \: product \: to \: a \: power \: raise \: each \: factor \: to \: that \: power \\ 25a {}^{2} {b}^{2} - 40a {b}^{2} + 16b {}^{2}$
Hope it will Help you