(v-7)(v+2)=

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Solution for (v-7)(v+2)= equation:


Simplifying
(v + -7)(v + 2) = 0

Reorder the terms:
(-7 + v)(v + 2) = 0

Reorder the terms:
(-7 + v)(2 + v) = 0

Multiply (-7 + v) * (2 + v)
(-7(2 + v) + v(2 + v)) = 0
((2 * -7 + v * -7) + v(2 + v)) = 0
((-14 + -7v) + v(2 + v)) = 0
(-14 + -7v + (2 * v + v * v)) = 0
(-14 + -7v + (2v + v2)) = 0

Combine like terms: -7v + 2v = -5v
(-14 + -5v + v2) = 0

Solving
-14 + -5v + v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(-2 + -1v)(7 + -1v) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(7 + -1v)' equal to zero and attempt to solve: Simplifying 7 + -1v = 0 Solving 7 + -1v = 0 Move all terms containing v to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1v = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1v = 0 + -7 -1v = 0 + -7 Combine like terms: 0 + -7 = -7 -1v = -7 Divide each side by '-1'. v = 7 Simplifying v = 7

Solution

v = {-2, 7}

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