Question

question
factor the expression completely.
$21x^4 + 70x$

Explanation:

Step1: Find GCF of terms

GCF of 21,70 is 7; GCF of $x^4,x$ is $x$. Overall GCF: $7x$

Step2: Factor out the GCF

$21x^4 + 70x = 7x(3x^3 + 10)$

Answer:

$7x(3x^3 + 10)$