0=4x^2-20x+25-x-8

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Solution for 0=4x^2-20x+25-x-8 equation:


Simplifying
0 = 4x2 + -20x + 25 + -1x + -8

Reorder the terms:
0 = 25 + -8 + -20x + -1x + 4x2

Combine like terms: 25 + -8 = 17
0 = 17 + -20x + -1x + 4x2

Combine like terms: -20x + -1x = -21x
0 = 17 + -21x + 4x2

Solving
0 = 17 + -21x + 4x2

Solving for variable 'x'.

Combine like terms: 0 + -17 = -17
-17 + 21x + -4x2 = 17 + -21x + 4x2 + -17 + 21x + -4x2

Reorder the terms:
-17 + 21x + -4x2 = 17 + -17 + -21x + 21x + 4x2 + -4x2

Combine like terms: 17 + -17 = 0
-17 + 21x + -4x2 = 0 + -21x + 21x + 4x2 + -4x2
-17 + 21x + -4x2 = -21x + 21x + 4x2 + -4x2

Combine like terms: -21x + 21x = 0
-17 + 21x + -4x2 = 0 + 4x2 + -4x2
-17 + 21x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-17 + 21x + -4x2 = 0

Factor a trinomial.
(-17 + 4x)(1 + -1x) = 0

Subproblem 1

Set the factor '(-17 + 4x)' equal to zero and attempt to solve: Simplifying -17 + 4x = 0 Solving -17 + 4x = 0 Move all terms containing x to the left, all other terms to the right. Add '17' to each side of the equation. -17 + 17 + 4x = 0 + 17 Combine like terms: -17 + 17 = 0 0 + 4x = 0 + 17 4x = 0 + 17 Combine like terms: 0 + 17 = 17 4x = 17 Divide each side by '4'. x = 4.25 Simplifying x = 4.25

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 = {4.25, 1}

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