Question

If 2x+6y=60 a d xy=1 find x square + 9y square.
Chapter--Identities.

Answer 1

Answer:

Step-by-step explanation:

2x+6y=60

2(x+3y)=60

x+3y=30

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

(30)^2=x^2+3y^2+6xy

900=x^2+3y^2+6(1)

900-6= x^2+3y^2=894

Hope it helps

Answer 2

Step-by-step explanation:

site square both side ,then try to solve

hope ans is satisfied