Question 390974
{{{(7x+5)(5x^2+5x+2)}}}

First multiply 7x by all three items in the second set

{{{7x*5x^2 = 35X^3}}}
{{{7x*5x = 35X^2}}}
{{{7x*2 = 14X}}}

Then multiply 5 by all three items in the second set

{{{5*5x^2 = 25X^2}}}
{{{5*5x = 25X}}}
{{{5*2 = 10}}}

Combine all answers:

{{{35x^3 + 35X^2 + 14X + 25X^2 + 25X + 10}}}

Combine like terms:

{{{35x^3 + 60x^2 + 39X + 10}}}