Question

From an Algebra 2 class
solve x^2+9=0

Answer 1

10^2=0

Step-by-step explanation

Because x by it self always means one it would technically be 1^2+9 which would equal 10^2=0

Answer 2

x = {-3, 3}

Explanation:

Simplifying

x2 + -9 = 0

Reorder the terms:

-9 + x2 = 0

Solving

-9 + x2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '9' to each side of the equation.

-9 + 9 + x2 = 0 + 9

Combine like terms: -9 + 9 = 0

0 + x2 = 0 + 9

x2 = 0 + 9

Combine like terms: 0 + 9 = 9

x2 = 9

Simplifying

x2 = 9

Take the square root of each side:

x = {-3, 3}