Precalculus Examples

Multiply (x+y+5)(x+y-5)
Step 1
Expand by multiplying each term in the first expression by each term in the second expression.
Step 2
Simplify terms.
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Step 2.1
Combine the opposite terms in .
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Step 2.1.1
Reorder the factors in the terms and .
Step 2.1.2
Add and .
Step 2.1.3
Add and .
Step 2.1.4
Reorder the factors in the terms and .
Step 2.1.5
Add and .
Step 2.1.6
Add and .
Step 2.2
Simplify each term.
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Step 2.2.1
Multiply by .
Step 2.2.2
Multiply by .
Step 2.2.3
Multiply by .
Step 3
Add and .
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Step 3.1
Reorder and .
Step 3.2
Add and .