What is expression is equivalent to (3x 2 sq - 6x - 4) - (x sq2 + 5x - 4) ?

2x squared - 11x

To find this, follow these steps:

(3x squared - 6x - 4) - (x squared + 5x - 4)

Subtract 3x squared and x squared to give you 2x squared. Then, add -6x and -5x together to get -11x.

The reason it isn’t -6x + 5x is because you’re meant to be subtracting the two equations, thus making the five a negative.

After this, you’re meant to add -4 and 4, which cancel each other out.

Hope this helps!