Question

coefficient of x in expansion (x+3)(x-1)
​

Answer 1

Answer:

$\boxed{2}$

Explanation:

$(x+3)(x-1)$

Expand the brackets.

$x(x-1)+3(x-1)$

$x^2-x+3x-3$

Combine like terms.

$x^2+2x-3$

The coefficient of $x$ is $2$.