Question

factorise:
$xy - yz - xz - {x}^{2}$
Use Grouping method​

Answer 1

Step-by-step explanation:

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The equation x

2

+xy+xz+yz can be factorised as follows:

x

2

+xy+xz+yz=(x

2

+xy)+(xz+yz)=x(x+y)+z(x+y)=(x+z)(x+y)

Hence, x

2

+xy+xz+yz=(x+z)(x+y)