Resolve into factors (1-30): 1. ab(x – y) – bc(x – y) Solution: ab(x – y) – bc(x – y)= (x – y)(ab – bc)= (x –…

1. Find the cube with the help of the formulae: 1) 2×2 + 3y2 Solution: (2×2 + 3y2)3= (2×2)3 + 3.(2×2)2.3y2 + 3.2×2.(3y2)2 + (3y2)3= 8×6 +…

1) 2a + 3b Solution: (2a + 3b)2=(2a)2 + 2.2a.3b + (3b)2=4a2 + 12ab + 9b2 খ) x2 + 2/y2 Solution: ( x2 + 2/y2)2= (x2)2 +…