1.

Factorise:a²-b²+2ab-c²

Answer»

Hi FRIEND,

Rearrenge the polynominal ;-

a^2+2ab+b^2-c^2


The a and b is a PERFECT square , with the formula ( a + b)^2 = a^2+2ab+b^2

So, (a+b)^2 - c^2

This leaves you with a difference of squares , whose formula is ( a+b)(a- b)= a^2 - b^2

So, you can GIVE ( a + b+c) ( a-b-c)..i HOPE it HELPS


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