Answer:
Step-by-step explanation:
The way you solve this equation is by substituting in the values we know:
3[tex]x^{2}[/tex][(2x + 5) - (7x-1)]
Then you have to simplify:
3[tex]x^{2}[/tex](-5x + 6)
And then you multiply:
-15[tex]x^3[/tex] + 18[tex]x^{2}[/tex]
