Question

Factorise the
the following using
suitable identities
4x^2+y^2+25z^2-4xy-10yz+20y​

Answer 1

Answer:

(2x-y+5z)²

Step-by-step explanation:

4x²+y²+25z²-4xy-10yz+20zx

=(2x)²+(-y)²+(5z)²+2*2x*(-y) + 2*(-y)*5z + 2*5z*2x

=(2x-y+5z)²

Hope it helps