#1**+1 **

(2x+3y)^2 = 4 expand

4x^2 + 12 xy + 9y^2 = 4

4 x^2 + 12(-5) + 9y^2 = 4 You can take it from here, hopefully !

ElectricPavlov Oct 9, 2020

#2**0 **

well i got that already i got 4x + 9y = 64 but i dont understand how to turn this into 4x^2 + 9y^2 = something?

Guest Oct 9, 2020

#3**+1 **

Well, if you got 4x + 9y = 64 you didn't look at the answer I gave you......

ElectricPavlov
Oct 9, 2020