Tick (✓) the correct answer

Question:

Tick (✓) the correct answer:

x2 − xz + xy − yz = ?

(a) (x − y)(x + z)

(b) (x − y)(− z)

(c) (x + y)(x − z)

(d) (x − y)(z − x)

Solution:

(c) (x + y)(x − z)

$x^{2}-x z+x y-y z$

$=x(x-z)+y(x-z)$

$=(x+y)(x-z)$

 

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