Question

incorrect your answer is incorrect. find the greatest common factor of these three expressions. 21, 9w⁴, and 18w² 3w² try again

Explanation:

Step1: Factor coefficients to primes

$21 = 3 \times 7$, $9 = 3^2$, $18 = 2 \times 3^2$

Step2: Find GCF of coefficients

The common prime factor is 3, so GCF of 21,9,18 is 3.

Step3: Find GCF of variable terms

For $w^0$ (from 21), $w^4$, $w^2$: the lowest exponent is 0, so GCF is $w^0=1$.

Step4: Multiply coefficient and variable GCF

$3 \times 1 = 3$

Answer:

$3$