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Evaluate : ( 2a + 3b )^2 + 2 ( 2a + ...

Evaluate :

`( 2a + 3b )^2 + 2 ( 2a + 3b ) ( 2a - 3b ) + ( 2a - 3b )^2`

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Evaluate : ( 2a + 3b ) - ( 2a - 3b )

-3 (a + b) + 4 (2a - 3b) - (2a - b)

2a - 3b - [3a - 2b - {a - c- (a - 2b)}]

Factorise (2a + 3b)^(2) - (3a - 2b)^(2) .

If a = 2 and b = 3, find the value of (i) a + b (ii) a^(2) + ab (iii) ab - a^(2) (iv) 2a - 3b (v) 5a^(2) - 2ab (vi) a^(3) - b^(3)

4(2a-3b)^(2)+8(2a-3b)

(2a ^ (2) + 3b ^ (2)) (5a ^ (2) -6b ^ (2))

If (2a+3b) (2c -3d) = (2a-3b) (2c+3d) then

If a : b =2 : 3 ," then find "(3a - b) : ( 2a+ 3b) .