EM-1542

Factorising by grouping

E Math · Secondary 4 · Medium · Factorising by grouping

Factorise completely

x^2 - 5x - xy + 5y

.

$(x-y)(x-5)$
$(x+y)(x-5)$
$(x-y)(x+5)$
$x^2 - y^2 -5(x-y)$

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