SOLUTION:
Case: GCF
Method:
Simplifying the numerator:
4x+20 = 4(x+5)
Simplifying the denominator
[tex]\begin{gathered} x^2+2x-15 \\ x^2+5x-3x-15 \\ x(x+5)-3(x+5) \\ (x+5)(x-3) \end{gathered}[/tex]
A common factor between them is x+5
Final answer:
x+5
