Question

PLZ HELP
Antonia is factoring the polynomial which has four terms.
21x^3-63x^2+15x-45
3[7x^3-21x^2+5x-15]
3[7x^2(x-3)+5(x-3)]

Which is the completely factored form of her polynomial?
A. 21x^2(x-3)
B. 36x^2(x-3)
C. 3(7x^2+5)(x-3)
D. 3(12x^2+5)(x-3)​

Answer 1

Answer:

1.

$21 \times < 3 - 63 \times < 2 + 15 \times - 45$

2.

$a.21 \times < 2( \times - 3$