1.

Using the identify (a + b)2 = a2 + 2ab + b2 simplify the following.(3x+2y)2

Answer»

Using the identity 

(a + b)2 = a2 +2ab + b2 

(3x + 2y)2 =(3x)2 + 2.3x.2y + (2y)

= 9x2 +12xy + 4y2



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