X*X+4*X-45=0

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Solution for X*X+4*X-45=0 equation:


Simplifying
X * X + 4X + -45 = 0

Multiply X * X
X2 + 4X + -45 = 0

Reorder the terms:
-45 + 4X + X2 = 0

Solving
-45 + 4X + X2 = 0

Solving for variable 'X'.

Factor a trinomial.
(-9 + -1X)(5 + -1X) = 0

Subproblem 1

Set the factor '(-9 + -1X)' equal to zero and attempt to solve: Simplifying -9 + -1X = 0 Solving -9 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1X = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1X = 0 + 9 -1X = 0 + 9 Combine like terms: 0 + 9 = 9 -1X = 9 Divide each side by '-1'. X = -9 Simplifying X = -9

Subproblem 2

Set the factor '(5 + -1X)' equal to zero and attempt to solve: Simplifying 5 + -1X = 0 Solving 5 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1X = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1X = 0 + -5 -1X = 0 + -5 Combine like terms: 0 + -5 = -5 -1X = -5 Divide each side by '-1'. X = 5 Simplifying X = 5

Solution

X = {-9, 5}

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