Question

Pls send the solutions for the 8th and 9th sum as soon as possible. The best one will definitely be marked the brainliest

Answer 1

ab(x2 + y2) - xy(a2 + b2) = abx2 + aby2 - a2xy + b2xy

= abx2 + b2xy + aby2 - a2xy

= bx(ax - by) - ay(ax - by)

= (ax - by)(bx - ay)

...................2.......................

100-a^2-b^2-2ab

=10^2-(a^2+b^2+2ab)

=10^2-(a+b)^2

=(10+a+b)(10-a-b)