4x^2+19x=-21

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Solution for 4x^2+19x=-21 equation:


Simplifying
4x2 + 19x = -21

Reorder the terms:
19x + 4x2 = -21

Solving
19x + 4x2 = -21

Solving for variable 'x'.

Reorder the terms:
21 + 19x + 4x2 = -21 + 21

Combine like terms: -21 + 21 = 0
21 + 19x + 4x2 = 0

Factor a trinomial.
(3 + x)(7 + 4x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(7 + 4x)' equal to zero and attempt to solve: Simplifying 7 + 4x = 0 Solving 7 + 4x = 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 + 4x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4x = 0 + -7 4x = 0 + -7 Combine like terms: 0 + -7 = -7 4x = -7 Divide each side by '4'. x = -1.75 Simplifying x = -1.75

Solution

x = {-3, -1.75}

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