Factor completely 3x^3 + 6x^2 − 24x
select one:
a. 3x(x − 4)(x + 2)
b. 3x(x + 4)(x − 2)
c. 3x(x − 3)(x + 2)
d. 3x(x + 3)(x + 2)

The only choice that multiplies out to give the original expression is ...

... b. 3x(x + 4)(x − 2)

After you factor out 3x, you have 3x(x² +2x -8). At this point you can eliminate answers C and D because the product of the constants in the binomial factors is not -8. You can eliminate answer A because the product of binomial terms gives -2x as the linear term in the quadratic factor, not +2x.

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680