2f^2-f=45

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Solution for 2f^2-f=45 equation:


Simplifying
2f2 + -1f = 45

Reorder the terms:
-1f + 2f2 = 45

Solving
-1f + 2f2 = 45

Solving for variable 'f'.

Reorder the terms:
-45 + -1f + 2f2 = 45 + -45

Combine like terms: 45 + -45 = 0
-45 + -1f + 2f2 = 0

Factor a trinomial.
(-9 + -2f)(5 + -1f) = 0

Subproblem 1

Set the factor '(-9 + -2f)' equal to zero and attempt to solve: Simplifying -9 + -2f = 0 Solving -9 + -2f = 0 Move all terms containing f to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -2f = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -2f = 0 + 9 -2f = 0 + 9 Combine like terms: 0 + 9 = 9 -2f = 9 Divide each side by '-2'. f = -4.5 Simplifying f = -4.5

Subproblem 2

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

Solution

f = {-4.5, 5}

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