Answer:
<u>(3); (-1/2); (-4)</u>
Step-by-step explanation:
First, you should convert the equation into cubic form.
r(x)=(x^2+x−12)(2x+1)
<u>2x^3 +3
x^2
− 23x− 12=0</u>
Next, use the rational roots test to find the first root.
<u>(-1/2) </u>
Using the factor theorem you can find the other roots.
<u>(3)</u> <u>(-4)</u>

cross multiply
12x=180
divide both sides by 12
x=15
if their is 10 girls, then you need
5 more to keep the ratio.
See im only in the *th grade i have not learned that yet but soon will come maybe when it comes i can get u too help me ?
Do you have a picture or something cause nobody can answer your question without a picture….. so yea