Basic Math Examples

Simplify (3y^2-20y-7)/(y-4)*(y^2-12y+32)/(y-7)
Step 1
Factor by grouping.
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Step 1.1
For a polynomial of the form , rewrite the middle term as a sum of two terms whose product is and whose sum is .
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Step 1.1.1
Factor out of .
Step 1.1.2
Rewrite as plus
Step 1.1.3
Apply the distributive property.
Step 1.1.4
Multiply by .
Step 1.2
Factor out the greatest common factor from each group.
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Step 1.2.1
Group the first two terms and the last two terms.
Step 1.2.2
Factor out the greatest common factor (GCF) from each group.
Step 1.3
Factor the polynomial by factoring out the greatest common factor, .
Step 2
Factor using the AC method.
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Step 2.1
Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .
Step 2.2
Write the factored form using these integers.
Step 3
Reduce the expression by cancelling the common factors.
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Step 3.1
Cancel the common factor of .
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Step 3.1.1
Factor out of .
Step 3.1.2
Cancel the common factor.
Step 3.1.3
Rewrite the expression.
Step 3.2
Cancel the common factor of .
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Step 3.2.1
Factor out of .
Step 3.2.2
Cancel the common factor.
Step 3.2.3
Rewrite the expression.
Step 4
Expand using the FOIL Method.
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Step 4.1
Apply the distributive property.
Step 4.2
Apply the distributive property.
Step 4.3
Apply the distributive property.
Step 5
Simplify and combine like terms.
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Step 5.1
Simplify each term.
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Step 5.1.1
Multiply by by adding the exponents.
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Step 5.1.1.1
Move .
Step 5.1.1.2
Multiply by .
Step 5.1.2
Multiply by .
Step 5.1.3
Multiply by .
Step 5.1.4
Multiply by .
Step 5.2
Add and .