Tick (✓) the correct answer

Question:

Mark (✓) against the correct answer:

7x2 − 19x − 6 = ?

(a) (x − 3)(7x + 2)

(b) (x + 3)(7x − 2)

(c) (x − 3)(7x − 2)

(d) (7x − 3)(x + 2)

Solution:

(a) (x − 3)(7x + 2)

$7 x^{2}-19 x-6$

$=7 x^{2}-21 x+2 x-6$

$=7 x(x-3)+2(x-3)$

$=(x-3)(7 x+2)$

 

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