Can someone do these three problems for me please <3

see below

Step-by-step explanation:

4. ( x+3) ( x-5)

FOIL

   x*x - 5x + 3x -15

Combine like terms

  x^2 -2x-15

5.  ( 2x-4) ( 3x-7)

FOIL

  2x*3x  -7*2x  -4*3x +28

6x^2 -14x -12x +28

Combine like terms

6x^2 -26x +28

6.  ( 3x^2 +2x+1) ( x+3)

Distribute

3x^2*x + 3x^2*3  + 2x*x + 2x*3  + x+3

3x^3 +9x^2 +2x^2 +6x+x+3

Combine like terms

3x^3+11x^2+7x+3

Step-by-step explanation:

Hey there!

4. (x+3) (x-5)

Multiply them.

Simplify them to get answer.

5. (2x-4) (3x-7).

Multiply them and simplify to get answer.

6. (3x^2 +2x +1) (x +3)

Multiply them and simplify them to get answer.

Hope it helps..

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse