Question

Factorise: (a + b)(2a + 3a) − (a + b)(a + 1)

Answer 1

Answer:

$1. (a+b)(2a+3a) - (a+b)(a+1)\\\\2. (a+b) 5a - (a+b)(a+1)\\\\\\3. (5a+5b)a - (a+b)(a+1)\\\\\\4. 5a^2+5ab - (a+b)(a+1)\\\\\\\5. 5a^2+5ab - (a^2 + a +ba +b)\\\\\\6. 5a^2 + 5ab - a^2 -a - ba - b\\\\\\\7. 5a^2 - a^2 +5ab - ab -a-b\\\\\\8. 4a^2+4ab-a-b\\\\\\9. (4a^2+4ab)+(-a-b)\\\\\\10. 4a(a+b)-(a+b)\\\\\\11. (a+b)(4a-1)$

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