Question

If x+y =8 and x-y=2 , find the value of 9x^2+16y^2​

Answer 1

Answer:

X+y=8

x-y=2

2x=10

X=5

5+y=8

y=3

Step-by-step explanation:

9(5)^2+16(3)^2

9(25)+16(9)

225+144

=369