X^2+y^2-10=0

Write the values of y, for which the equation has sense.

Answer: y = 3

Step-by-step explanation:

The objective is to get 0 on the left side to equal the 0 on the right side. I'd like to do this by making the sum of x^2 and y^2 equal to 10. If (x^2+y^2) = 10, the - 10 on the left side will cancel it out to equal 0.

1^2 = 1

3^3 = 9

1 + 9 = 10

Therefore, x is 1 and y is 3.

x^2 + y^2 - 10 = 0

1^2 + 3^2 - 10 - 0

1 + 9 - 10 = 0

10 - 10 = 0

0 = 0