-4=2x^2-7x-4

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Solution for -4=2x^2-7x-4 equation:


Simplifying
-4 = 2x2 + -7x + -4

Reorder the terms:
-4 = -4 + -7x + 2x2

Add '4' to each side of the equation.
-4 + 4 = -4 + -7x + 4 + 2x2

Combine like terms: -4 + 4 = 0
0 = -4 + -7x + 4 + 2x2

Reorder the terms:
0 = -4 + 4 + -7x + 2x2

Combine like terms: -4 + 4 = 0
0 = 0 + -7x + 2x2
0 = -7x + 2x2

Solving
0 = -7x + 2x2

Solving for variable 'x'.
Remove the zero:
7x + -2x2 = -7x + 2x2 + 7x + -2x2

Reorder the terms:
7x + -2x2 = -7x + 7x + 2x2 + -2x2

Combine like terms: -7x + 7x = 0
7x + -2x2 = 0 + 2x2 + -2x2
7x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
7x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(7 + -2x) = 0

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

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

Solution

x = {0, 3.5}

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