(4x^2)-(7x)-30=0

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Solution for (4x^2)-(7x)-30=0 equation:


Simplifying
(4x2) + -1(7x) + -30 = 0

Remove parenthesis around (7x)
(4x2) + -1 * 7x + -30 = 0

Multiply -1 * 7
(4x2) + -7x + -30 = 0

Reorder the terms:
-30 + -7x + (4x2) = 0

Solving
-30 + -7x + (4x2) = 0

Solving for variable 'x'.

Factor a trinomial.
(-2 + -1x)(15 + -4x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(15 + -4x)' equal to zero and attempt to solve: Simplifying 15 + -4x = 0 Solving 15 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -4x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -4x = 0 + -15 -4x = 0 + -15 Combine like terms: 0 + -15 = -15 -4x = -15 Divide each side by '-4'. x = 3.75 Simplifying x = 3.75

Solution

x = {-2, 3.75}

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