can u pls help me
the question is factorise i m not able to aolve this further
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Given Equation is a^2 - 1 - 2b - b^2
= > a^2 + ab - ab + a - b^2 - b - a - b - 1
= > a^2 + ab + a - ab - b^2 - b - a - b - 1
= > a(a + b + 1) - b(a + b + 1) - 1(a + b + 1).
= > (a - b - 1)(a + b + 1).
Hope it helps!
= > a^2 + ab - ab + a - b^2 - b - a - b - 1
= > a^2 + ab + a - ab - b^2 - b - a - b - 1
= > a(a + b + 1) - b(a + b + 1) - 1(a + b + 1).
= > (a - b - 1)(a + b + 1).
Hope it helps!
sussan5577:
ohk
thanks
lots of love nd regards
but why we need to add such terms here
can u plz tell
if we wont add, we cant get the terms!
then how we will know that what we need to add in this question
??
Pratice. U will know directly, It cannot be explained here!
ohk
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