4 Which of the following expressions is
equivalent to x2 + 2x – 15 ?
A (x + 2)(x – 7.5)
C (x – 3)(x + 5)
B (x + 3)(x - 5)
D none of these

(x-3)(x+5)

Step-by-step explanation:

(x-3)(x+5)

x^2 - 3x + 5x - 15

x^2 + 2x - 15

(x-3)(x+5)

Step-by-step explanation:

I put the expression onto a graphing calculator, then I put all of the answers onto the calculator and it was equal to the original expression. Hope this helps.

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

step-by-step explanation:

cats