Answer:
x^3-10x^2+x+120
Step-by-step explanation:
Assuming you mean roots -3, 5, 8
These happen when we have (x+3)(x-5)(x-8)=0
Expand this
(x^2-2x-15)(x-8)=0
=x^3-2x^2-15x-8x^2+16x+120
=x^3-10x^2+x+120
6.25%
Percent =
360 square inches
12*15 = 360
62.5 : 37.5
When we divide 100 into 5:3 ratio the parts we make need to add up to 100
5parts +3 parts = 8 parts
100/8 parts = 12.5 are in each part
12.5*5 : 12.5*3
check our answer 62.5+37.5 = 100 ✅
