Question

2x(5+3x)-x find the coefficient of x

Answer 1

To start, we need to distribute

multiply 2x by everything in the parenthesis

2x (5 + 3x) - x

2x × 5 = 10x

2x × 3x = 6x²

now we have...

10x + 6x² - x

simplify

6x² + 9x

the coefficient of x is 9!