Question

IF 2x-3y , xy=2 find value of 4x^2+9y^2

Answer 1

Answer:

f6*5/5*3,,6,5/6/6/6/6/6=6/6/6/6/dvdhdhdhdhxh

Answer 2

Hi !

2x + 3y = 8

xy = 2

(a+b)² = a² +2ab + b²

(2x+3y)² = (2x)² +2 × 2x × 3y + (3y)²

8²= 4x²+24 + 9y²

64 - 24 = 4x²+ 9y²

∴ 4x²+ 9y² = 40