How do you solve this z squared minus 12 plus 36?

Answer 1

z2 - 12 + 36 is the same as z2 + 24.

That's a simplification, but not a solution. There's nothing to solve,

because the question doesn't give an equation.

If z2+24 were equal to something, then we'd have an equation, and

we would be thrilled to solve it for the value of 'z'.