Factorise:
1) x³ (2a-b) + x² (2a-b)
2) 9a (3a-5b) - 12a² (3a-5b)
3) (x+5)² - 4 (x+5)
please explain these sums clearly.
Answers
Answered by
2
1) x³ (2a-b) + x² (2a-b)
(2a-b) is common in both terms
Therefore,
(2a-b)(x³+x²)
(2a-b)(x²)(x+1)
2) 9a (3a-5b) - 12a² (3a-5b)
(3a-5b)(9a-12a²)
(3a-5b)(3a)(3-4a)
3) (x+5)² - 4 (x+5)
(x+5)(x+5-4)
(x+5)(x+1)
(2a-b) is common in both terms
Therefore,
(2a-b)(x³+x²)
(2a-b)(x²)(x+1)
2) 9a (3a-5b) - 12a² (3a-5b)
(3a-5b)(9a-12a²)
(3a-5b)(3a)(3-4a)
3) (x+5)² - 4 (x+5)
(x+5)(x+5-4)
(x+5)(x+1)
Similar questions