Question

(-a^2+9ab-b^2)-(-5a^2+ab-3b^2) find the difference?

Answer 1

(-a^2+5a^2)+(9ab-ab)+(-b^2+3b^2)
4a^2+8ab+2b^2

Answer 2

u simply need to open the bracket nd change d signs inside it since there's a negative sign outside!