Question

(e) 4x²y – 7xy2 - y2 by -x2y​

Answer 1

product of (7x−4y) and (3x−7y)

(7x−4y) (3x−7y)

⇒(7x)(3x)−(7x)(7y)−(4y)(3x)+(4y)(7y)

⇒21x^2−49xy−12xy+28y

21x^2 +28y^2 −61xy = Answer