Question

$6a {}^{2} + (2a {}^{2} - a {}^{2} ) - (a {}^{2} - b {}^{2} )$
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Answer 1

Step-by-step explanation:

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We factorise this by the method of taking out a common factor.

• (2a + b)² - 6a - 3b - 4

= (2a + b)² - [3 (2a + b) - 4]

= (2a + b) [(2a + b) - 3 - 4]

= (2a + b) [(2a + b) - 7]

= (2a + b)(2a + b -7)

simple question

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