Question

Solve the following system of equations algebraically:
x2 + y2 = 20
2y = x

Answer 1

x = 5

Explanation:

x2 + y2 = 20

xy = 20 ÷ 2 ÷2

= 10 ÷ 2

x = 5

i dont know whether this is right

but hope it helps n it works