Question

Find 3x+y
$(9x^2+y^2)=397, xy=38$

Answer 1

Answer:

Mark as BRAINLEST

Step-by-step explanation:

As we know that (a+b)

2

=a

2

+b

2

+2ab

(3x+5y)

2

=9x

2

+25y

2

+2×3x×5y

(3x+5y)

2

=181−180=1

(3x+5y)=

1

so (3x+5y)=1 is Ans.