Find the value of the expression (64x2 + 81y2 + 144xy), when x = 11 and .
Given,
(64x2 + 81y2 + 144xy)
X = 11
Y =
By using the formula (a + b)2 we get;
= (8x)2 + (9y)2 + 2(8x)(9y)
= (8x + 9y)2
= [8(11) + 9 ]2
= (88 + 12)2
= (100)2 = 10000
Hence the value of the expression is 10000.