How to simplify rational expressions using factoring? 1. 30a^2+60a+30/
30a^2+10a-20
2. 21v-7/
49v^2-14v-63
3. 15x^3+102x^2+72x/
7x^2+48x+36

step-by-step explanation:

its 512 because parenthesis and to the 2nd power is 512 so it will be 512

since no one answered yet i will give it a shot, not completely sure tho.

i think it should be y=cos(x+2pi), (third answer, answer c)

good luck.

the answer on ed. is:

c. "the graph of f(x) has exactly two x-intercepts."

hope i could someone! : )