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Factorise 2x^2 -x-21​
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1 vote
Factorise 2x^2 -x-21​

User Jatlin
by
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1 Answer

2 votes

Answer:

(x + 3) × (2x - 7)

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)

User James Couvares
by
7.9k points
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