Question

plz answer any one sincerely.. very urgent.. right answer will be brainliest​

Answer 1

given — 3x-4y=10

xy=-1

To find—(3x+4y)²

using the identity (a+b)²=a²+b²+2ab

(3x)²+(-4y)² = 9x²+16y²

xy =-1

(3x+4y)² = 9x²+16y²+2*3*(-4)*-1

= 9x²+16²+24

you can do the next by this method yourself