5x−2y=7 and xy=2, find the value of (5x+2y)2
127
129
133
145
5x−2y=7 and xy=2(5x+2y)2=(5x−2y)2+4×5x×2y(5x+2y)2=49+40×2=129
If 5x−2y=7 and xy=2 , then find the value of (5x+2y)2
If x : y = 4 : 7, Find the value of (3x+ 2y) : (5x + y).