Precalculus Examples

Solve Using the Quadratic Formula 3z^2-2z=7
Step 1
Subtract from both sides of the equation.
Step 2
Use the quadratic formula to find the solutions.
Step 3
Substitute the values , , and into the quadratic formula and solve for .
Step 4
Simplify.
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Step 4.1
Simplify the numerator.
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Step 4.1.1
Raise to the power of .
Step 4.1.2
Multiply .
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Step 4.1.2.1
Multiply by .
Step 4.1.2.2
Multiply by .
Step 4.1.3
Add and .
Step 4.1.4
Rewrite as .
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Step 4.1.4.1
Factor out of .
Step 4.1.4.2
Rewrite as .
Step 4.1.5
Pull terms out from under the radical.
Step 4.2
Multiply by .
Step 4.3
Simplify .
Step 5
The result can be shown in multiple forms.
Exact Form:
Decimal Form: