How do you FOIL (x+3)(x+5)?

Kai Ashley

Kai Ashley

Answered question

2022-02-08

How do you FOIL (x+3)(x+5)?

Answer & Explanation

maskorfclp

maskorfclp

Beginner2022-02-09Added 12 answers

FOIL is short for First, Outside, Inside, Last
It helps you to remember all the combinations when multiplying two bracketed terms each containing two expressions.
For your example, we have
First : (xx)=x2
Outside: (x*5)=5x
Inside: (3*x)=3x
Last: (3*5)=15
Add these together to get the answer:
(x+3)(x+5)
(=F+O+I+L)
=x2+3x+5x+15
=x2+8x+15

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