Question

factorise the following x² +xy- 2 y²
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Answer 1

Answer:

(x+2y)(x-y)

Step-by-step explanation:

=x² +(2-1)xy- 2 y²

=x² +2xy-xy-2 y²

=x(x+2y)-y(x+2y)

=(x+2y)(x-y)