Question

if 2x+3y=13 and xy=16 then 4x^2+9y^2​

Answer 1

Answer:

Step-by-step explanation:

2x+3y=13

xy=16

⇒(2x+3y)²=(2x)²+(3y)²+2*2x*3y

⇒(13)²=4x²+9y²+12xy

⇒169=4x²+9y²+12*16

⇒169=4x²+9y²+192

⇒4x²+9y²=192-169

⇒4x²+9y²=23

so, 4x²+9y²=23

HOPE IT HELPS

MARK AS BRAINLIEST