Question 487018
The GCF of {{{4x^2}}} and {{{20x}}} is {{{4x}}}. So we can factor out the GCF 4x from {{{4x^2+20x}}} to get {{{4x(x+5)}}}



So {{{4x^2+20x=4x(x+5)}}}



We check our answer by distributing the 4x back through. Notice how 4x times x is {{{4x^2}}} and how 4x times 5 is 20x. So this confirms our answer.