Question

Factorise x²+4y²+9z²-4xy+12yz-6zx​

Answer 1

Answer:

x^2+2^2y^2+3^2z^2-2^2xy+(2^2x3)yz-(2x3)zx

Answer 2

Step-by-step explanation:

x²+4y²+9z²-4xy+12yz-6zx

=x²+(2y)²+(3z)²+2*x*(-2y)+2*(-2y)*(-3z)+2*(-3z)*x

=(x-2y-3z)(x-2y-3z)