Question

can someone plz help me with three math problems

Answer 1

1. Factor.


14x3 – 21x

A.
14x3 – 21x

B.
x(14x2 – 21x)

C.
7x(2x2 – 3)

D.
2x(7x2 – 10)

Answer 2

2. Factor.


12x2y – 3x2y2 – 15xy


A.
3(12x2y – xy – 15xy)

B.
3(4xy – x2y – 15xy)

C.
3xy(4x – xy – 5)

D.
3x2y2(4xy – xy – 5)

Answer 3

3. Factor.


30w3x5 – 12wx3


A.
3wx2(10wx3 – 4x)

B.
6wx3(5w2x2 – 2)

C.
10wx2(3w2x2– 1.2x)

D.
10wx2(3w2x4 – 2x2)

Answer 4

1) 14x3 – 21x
=7x(2x^2-3), therefore c).
2) 12x2y – 3x2y2 – 15xy
=3xy(4x-xy-5), therefore, c).
3) 30w3x5 – 12wx3
=6wx^3(5w^2x^2-2), therefore b).
do you need help understanding how i got these?

Answer 5

thank you i got 100%