Question

Which one of the following expressions is equal to 64x2+9y2-48xy
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Answer 1

Answer:

sorry I know the answer but I don't know proper answer for the equation I have some doubt 64 into 2 128 plus 91 140

Answer 2

Answer:

$64x^2 + 9y^2 - 48xy$ $=(8x - 3y)^2$

Step-by-step explanation:

$64x^2 + 9y^2 - 48xy$

$=(8x)^2 + (3y)^2 - 2.8x.3y$

$=(8x - 3y)^2$  [using the identity $(a - b)^2 = a^2 + b^2 - 2ab$]