Answer:
Step-by-step explanation:
Answer:

Step-by-step explanation:
Multiply the equations together
(5x+4)(5x^2-7x-2)
25x^3-35x^2-10x+20x^2-28x-8
Add like terms
25x^3-15x^2-38x-8
N*x*a=n+x+a
<span>If n=1, x=2 and a=3.</span>
Last one D
Step-by-step explanation: