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ICSE Class 9 Answered

How to factorise -x2-1-2a-a2 
Asked by dnmgzp | 23 May, 2019, 10:18: AM
answered-by-expert Expert Answer
x2-1-2a-a2 
= x2- (1+ 2a+a2)
x2- (1+ a)2 
= [x - (1 + a)][x + (1 + a)] 
= (x - a - 1)(x + a + 1)
Answered by Yasmeen Khan | 23 May, 2019, 12:09: PM
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