Question

factorise 4x^2+9y^2-25z^2+12xy

Answer 1

heya friend

here's your answer...

$= 4x ^{2} + 9y ^{2} - 25z ^{2} + 12xy - 30yz - 20xz \\ = (2x + 3y - 5z) ^{2}$

hope it helps you