Hey what happened? I was worried about you.
Answer:
(a d)/(bc)
Step-by-step explanation:
a/b ÷ c/d
Copy dot flip
a/b * d/c
ad / bc
<span>(2x^4+3x^2+7)-(3x^3+9x+4)
you have to take away the </span>parentheses first
2x^4 + 3x^2 + 7 - 3x^3 - 9x - 4
combine like terms
2x^4 - 3x^3 + 3x^2 - 9x + 3