x^2-45=19x+21

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Solution for x^2-45=19x+21 equation:


Simplifying
x2 + -45 = 19x + 21

Reorder the terms:
-45 + x2 = 19x + 21

Reorder the terms:
-45 + x2 = 21 + 19x

Solving
-45 + x2 = 21 + 19x

Solving for variable 'x'.

Reorder the terms:
-45 + -21 + -19x + x2 = 21 + 19x + -21 + -19x

Combine like terms: -45 + -21 = -66
-66 + -19x + x2 = 21 + 19x + -21 + -19x

Reorder the terms:
-66 + -19x + x2 = 21 + -21 + 19x + -19x

Combine like terms: 21 + -21 = 0
-66 + -19x + x2 = 0 + 19x + -19x
-66 + -19x + x2 = 19x + -19x

Combine like terms: 19x + -19x = 0
-66 + -19x + x2 = 0

Factor a trinomial.
(-3 + -1x)(22 + -1x) = 0

Subproblem 1

Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 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 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(22 + -1x)' equal to zero and attempt to solve: Simplifying 22 + -1x = 0 Solving 22 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-22' to each side of the equation. 22 + -22 + -1x = 0 + -22 Combine like terms: 22 + -22 = 0 0 + -1x = 0 + -22 -1x = 0 + -22 Combine like terms: 0 + -22 = -22 -1x = -22 Divide each side by '-1'. x = 22 Simplifying x = 22

Solution

x = {-3, 22}

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