(2x-7)(-x-3)=

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Solution for (2x-7)(-x-3)= equation:


Simplifying
(2x + -7)(-1x + -3) = 0

Reorder the terms:
(-7 + 2x)(-1x + -3) = 0

Reorder the terms:
(-7 + 2x)(-3 + -1x) = 0

Multiply (-7 + 2x) * (-3 + -1x)
(-7(-3 + -1x) + 2x * (-3 + -1x)) = 0
((-3 * -7 + -1x * -7) + 2x * (-3 + -1x)) = 0
((21 + 7x) + 2x * (-3 + -1x)) = 0
(21 + 7x + (-3 * 2x + -1x * 2x)) = 0
(21 + 7x + (-6x + -2x2)) = 0

Combine like terms: 7x + -6x = 1x
(21 + 1x + -2x2) = 0

Solving
21 + 1x + -2x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(7 + -2x)(3 + x) = 0

Subproblem 1

Set the factor '(7 + -2x)' equal to zero and attempt to solve: Simplifying 7 + -2x = 0 Solving 7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 0 + -7 -2x = 0 + -7 Combine like terms: 0 + -7 = -7 -2x = -7 Divide each side by '-2'. x = 3.5 Simplifying x = 3.5

Subproblem 2

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

Solution

x = {3.5, -3}

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