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3 years ago

11

Factorise 2x^2 -x-21

1 answer:

yaroslaw [1]3 years ago

8 0

Answer:

(x + 3) × (2x - 7)

Step-by-step explanation:

2x² - x - 21

Write as a difference

2x² + 6x - 7x - 21

Factor the expressions

2x × (x + 3) - 7 (x + 3)

Factor the expression

(x +3) × (2x - 7)

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