Algebra Examples

Simplify (y+4)(y-5)
(y+4)(y-5)
Step 1
Expand (y+4)(y-5) using the FOIL Method.
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Step 1.1
Apply the distributive property.
y(y-5)+4(y-5)
Step 1.2
Apply the distributive property.
yy+y-5+4(y-5)
Step 1.3
Apply the distributive property.
yy+y-5+4y+4-5
yy+y-5+4y+4-5
Step 2
Simplify and combine like terms.
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Step 2.1
Simplify each term.
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Step 2.1.1
Multiply y by y.
y2+y-5+4y+4-5
Step 2.1.2
Move -5 to the left of y.
y2-5y+4y+4-5
Step 2.1.3
Multiply 4 by -5.
y2-5y+4y-20
y2-5y+4y-20
Step 2.2
Add -5y and 4y.
y2-y-20
y2-y-20
(y+4)(y-5)
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