Question

what should be added to the following expressions to make it perfect square : 112xy + 64y^2 ?​

Answer 1

Step-by-step explanation:

64y²= (8y)²

112xy = 2*8y*7x

64y²+112xy is in the form a2+2ab, a=8y, b=7x to make it perfect square add (7x)²=49x²

49x² should be added

then 64x²+112xy+49y² = (8x+7y)²