5f^2-30f+40=0

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Solution for 5f^2-30f+40=0 equation:


Simplifying
5f2 + -30f + 40 = 0

Reorder the terms:
40 + -30f + 5f2 = 0

Solving
40 + -30f + 5f2 = 0

Solving for variable 'f'.

Factor out the Greatest Common Factor (GCF), '5'.
5(8 + -6f + f2) = 0

Factor a trinomial.
5((2 + -1f)(4 + -1f)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(2 + -1f)' equal to zero and attempt to solve: Simplifying 2 + -1f = 0 Solving 2 + -1f = 0 Move all terms containing f to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1f = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1f = 0 + -2 -1f = 0 + -2 Combine like terms: 0 + -2 = -2 -1f = -2 Divide each side by '-1'. f = 2 Simplifying f = 2

Subproblem 2

Set the factor '(4 + -1f)' equal to zero and attempt to solve: Simplifying 4 + -1f = 0 Solving 4 + -1f = 0 Move all terms containing f to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1f = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1f = 0 + -4 -1f = 0 + -4 Combine like terms: 0 + -4 = -4 -1f = -4 Divide each side by '-1'. f = 4 Simplifying f = 4

Solution

f = {2, 4}

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