Question

There's a solution to y=7 and x^2= -y^2 +9
true or false?
heres my work.
x^2 = -(7)^2+9
x^2 = -49+9
x^2 = -40
How do i continue from here?

Answer 1

Take the square root of both sides so\[x = \sqrt{-40}\] but it is impossible to take the square root of a negative number so the answer would be false

Answer 2

Okay that's what I thought thanks much!