4y^2+0-9=0

Solution for 4y^2+0-9=0 equation:

Simplifying
4y2 + 0 + -9 = 0

Reorder the terms:
0 + -9 + 4y2 = 0

Combine like terms: 0 + -9 = -9
-9 + 4y2 = 0

Solving
-9 + 4y2 = 0

Solving for variable 'y'.

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

Add '9' to each side of the equation.
-9 + 9 + 4y2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 4y2 = 0 + 9
4y2 = 0 + 9

Combine like terms: 0 + 9 = 9
4y2 = 9

Divide each side by '4'.
y2 = 2.25

Simplifying
y2 = 2.25

Take the square root of each side:
y = {-1.5, 1.5}