v^2-v-5=7

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Solution for v^2-v-5=7 equation:


Simplifying
v2 + -1v + -5 = 7

Reorder the terms:
-5 + -1v + v2 = 7

Solving
-5 + -1v + v2 = 7

Solving for variable 'v'.

Reorder the terms:
-5 + -7 + -1v + v2 = 7 + -7

Combine like terms: -5 + -7 = -12
-12 + -1v + v2 = 7 + -7

Combine like terms: 7 + -7 = 0
-12 + -1v + v2 = 0

Factor a trinomial.
(-3 + -1v)(4 + -1v) = 0

Subproblem 1

Set the factor '(-3 + -1v)' equal to zero and attempt to solve: Simplifying -3 + -1v = 0 Solving -3 + -1v = 0 Move all terms containing v to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1v = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1v = 0 + 3 -1v = 0 + 3 Combine like terms: 0 + 3 = 3 -1v = 3 Divide each side by '-1'. v = -3 Simplifying v = -3

Subproblem 2

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

Solution

v = {-3, 4}

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