1.

Factorise : (a + b)3 - 8 My attempt = (a + b)3 - (2)3 = (a + b - 2) {(a + b)2 ​​​​​+ (2)2 + 2(a + b)} What should I do not?

Answer»

Factorise :

(a + b)3 - 8

My attempt

= (a + b)3 - (2)3

= (a + b - 2) {(a + b)2 ​​​​​+ (2)2 + 2(a + b)}

What should I do not?



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