Help please will give brainliest factor 2x3 + 6x2 - 7x-21.
A. (x + 3)(2x2 - 7)
B. 2x(x+3)(x - 7)
C. (x-3)(2x2 + 7)
D. (x-3)(x + 7)

[x + 3][2x² - 7]
Step-by-step explanation:
Start out by doing this: [2x³ + 6x² ] - [7x - 21]
↑ ⤻ ↑
GCF: 2x² GCF: -7
Do as so: 2x²[x + 3] -7[x + 3]
You see, one factor is already found [x + 3]. You only use it ONCE. Now, the other factor comes from your two Greatest Common Factors from both groups [2x² - 7]. Together, you end up with the above answer. That arrow under the negative tells you that it is attached to the 3 [distribution of the negative].