(i) 3 – 5a – 5b – 12(a + b)2
(ii) a4 – 11a2 + 10
Answer :
(i) 3 – 5a – 5b – 12(a + b)2
Above terms can be written as,
3 – 5(a + b) – 12(a + b)2
3 – 9(a + b) + 4(a + b) – 12(a + b)2
Take out common in all terms we get,
3(1 – 3(a + b)) + 4(a + b) (1 – 3(a + b))
(1 – 3(a + b)) (3 + 4(a + b))
(1 – 3a – 3b) (3 + 4a + 4b)
(ii) a4 – 11a2 + 10
a4 – 11a2 + 10
Above terms can be written as,
a4 – 10a2 – a2 + 10
Take out common in all terms we get,
a2 (a2 – 10) – 1(a2 – 10)
(a2 – 10) (a2 – 1)
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