Pre-Algebra Examples

Solve for x y=x^2-4x-12
Step 1
Rewrite the equation as .
Step 2
Subtract from both sides of the equation.
Step 3
Use the quadratic formula to find the solutions.
Step 4
Substitute the values , , and into the quadratic formula and solve for .
Step 5
Simplify.
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Step 5.1
Simplify the numerator.
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Step 5.1.1
Factor out of .
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Step 5.1.1.1
Factor out of .
Step 5.1.1.2
Factor out of .
Step 5.1.1.3
Factor out of .
Step 5.1.2
Multiply by .
Step 5.1.3
Subtract from .
Step 5.1.4
Rewrite as .
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Step 5.1.4.1
Factor out of .
Step 5.1.4.2
Rewrite as .
Step 5.1.4.3
Add parentheses.
Step 5.1.5
Pull terms out from under the radical.
Step 5.2
Multiply by .
Step 5.3
Simplify .
Step 6
The final answer is the combination of both solutions.