Question

if 3x + 4y =16 and xy = 4 find the value of 9x²+16y²

Answer 1

"3x+4y=16

Squaring on both sides

(3x+4y)^2=256

(3x)^2+(4y)^2 +24xy=256

9x^2+16y^2+96=256

Answer is 160

In fact, it is mainly required to find out Y equation connecting x, and xy, and y.

When a is the angle the perpendicular making the axis of x, then you need to find out the equation of straight line y.

We need to find values of x and y which satisfy both equations.

"

Answer 2

Answer:-

Step by step explanation. Hope this helps you... Pls mark ad brainliest