Question

answer the following questions?


if 2x+3y=26,xy=2 find the value of
$4 {x}^{2} + 9 {y}^{2}$

Answer 1

Answer is here:

So squaring on both sides.
(2x + 3y)^2 = (26)^2
(2x)^2 + (3y) + 2*2x*3y = 676
4x^2 + 9y^2 + 12xy = 676
4x^2 + 9y^2 + 12*2 = 676
4x^2 + 9y^2 + 24 = 676
4x^2 + 9y^2 = 676 - 24
4x^2 + 9y^2= 652

Answer 2

here is ur answer
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