Answer:
[tex]14x^7-182x^5+35x^4-140x^3-315x^2[/tex]
Step-by-step explanation:
Find the product between [tex]7x^2(2x^3+5)[/tex] first.
[tex]7x^2(2x^3) + 7x^2(5)\\14x^5 + 35x^2[/tex]
Now multiply this expression with the next expression being sure to distribute into each and every term in both parenthesis.
[tex](14x^5+35x^2)(x^2-4x-9)[/tex]
[tex]14x^5(x^2) + 14x^5(-4x)+14x^5(-9) +35x^2(x^2)+35x^2(-4x)+35x^2(-9)\\\\14x^7-56x^5-126x^5+35x^4-140x^3-315x^2\\\\14x^7-182x^5+35x^4-140x^3-315x^2[/tex]
Answer:
the correct answer is c
Step-by-step explanation:
14x7-56x6-126x5+35x4-140x3=315x2
i take the quiz .believe me
