4x^2+5(2)-20=0

Solution for 4x^2+5(2)-20=0 equation:

Simplifying
4x2 + 5(2) + -20 = 0

Multiply 5 * 2
4x2 + 10 + -20 = 0

Reorder the terms:
10 + -20 + 4x2 = 0

Combine like terms: 10 + -20 = -10
-10 + 4x2 = 0

Solving
-10 + 4x2 = 0

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + 4x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 4x2 = 0 + 10
4x2 = 0 + 10

Combine like terms: 0 + 10 = 10
4x2 = 10

Divide each side by '4'.
x2 = 2.5

Simplifying
x2 = 2.5

Take the square root of each side:
x = {-1.58113883, 1.58113883}