-3=5x-8x^2

Solution for -3=5x-8x^2 equation:

Simplifying
-3 = 5x + -8x2

Solving
-3 = 5x + -8x2

Solving for variable 'x'.

Reorder the terms:
-3 + -5x + 8x2 = 5x + -5x + -8x2 + 8x2

Combine like terms: 5x + -5x = 0
-3 + -5x + 8x2 = 0 + -8x2 + 8x2
-3 + -5x + 8x2 = -8x2 + 8x2

Combine like terms: -8x2 + 8x2 = 0
-3 + -5x + 8x2 = 0

Factor a trinomial.
(-3 + -8x)(1 + -1x) = 0

Subproblem 1
Set the factor '(-3 + -8x)' equal to zero and attempt to solve:

Simplifying
-3 + -8x = 0

Solving
-3 + -8x = 0

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

Add '3' to each side of the equation.
-3 + 3 + -8x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -8x = 0 + 3
-8x = 0 + 3

Combine like terms: 0 + 3 = 3
-8x = 3

Divide each side by '-8'.
x = -0.375

Simplifying
x = -0.375
Subproblem 2
Set the factor '(1 + -1x)' equal to zero and attempt to solve:

Simplifying
1 + -1x = 0

Solving
1 + -1x = 0

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

Add '-1' to each side of the equation.
1 + -1 + -1x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1x = 0 + -1
-1x = 0 + -1

Combine like terms: 0 + -1 = -1
-1x = -1

Divide each side by '-1'.
x = 1

Simplifying
x = 1
Solution
x = {-0.375, 1}