What is the greatest common factor of 3x^43x 4 , 15x^315x 3 , and 21x^221x 2 ?

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asked Sep 13, 2020 104k views

1 vote

What is the greatest common factor of 3x^43x 4 , 15x^315x 3 , and 21x^221x 2 ?

Mathematics
middle-school

Brygom asked

by Brygom

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2 Answers

5 votes

Answer:

3x²

Explanation:

Bottus answered Sep 14, 2020

by Bottus

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3 votes

Answer:

3x²

Explanation:

$3x^4=\boxed{3}\cdot\boxed{x}\cdot\boxed{x}\cdot x\cdot x\\\\15x^3=\boxed{3}\cdot5\cdot\boxed{x}\cdot\boxed{x}\cdot x\\\\21x^2=\boxed{3}\cdot7\cdot\boxed{x}\cdot\boxed{x}\\\\GCF\bigg(3x^4,\ 15x^3,\ 21x^2\bigg)=\boxed3\cdot\boxed{x}\cdot\boxed{x}=3x^2$