Question

factorisation x^2-4y^2-6x+9

Answer 1

Concepts used :

1) Identity:
${(x - y)}^{2} = {x}^{2} + {y}^{2} - 2xy$
2) Identity :
${x}^{2} - {y}^{2} = (x + y)(x - y)$
3) Substituting the values to a variable