2 years ago

What is the greatest common factor (GCF) of the numerator and denominator

Mathematics

2 answers:

lesya [120]2 years ago

6 0

Answer: x+5

Step-by-step explanation:

ad-work [718]2 years ago

4 0

Answer:

Step-by-step explanation:

x²+2x-15 = x²-3x+5x-15 = x(x-3)+5(x-3)=(x+5)(x-3)

or delta:

∆=2²-4*1*(-15)=4+60=64

√∆=8

x1 = (-2+8)/2 = 3

x2=(-2-8)/2=-5

and 4x+20 = 4(x+5)

The same is (x+5), so it is GCF. answer C

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