Question

4b^2-8ab+5a^2-13ab-25b^2+16a^2

Answer 1

Explicación paso a paso:

$4 {b}^{2} - 8ab + 5 {a}^{2} - 13ab - - 25 {b}^{2} + 16 {a}^{2} = - 21 {b}^{2} - 21ab + 21 {a}^{2}$