Seudónimo Seudónimo
  • 04-05-2021
  • Mathematics
contestada

21x^3 - 9x^2 - 28x + 12
Completely factor
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jcherry99
jcherry99 jcherry99
  • 04-05-2021

Answer:

(7x - 2)(3x^2 - 4)

See below.

Step-by-step explanation:

21x^3 - 9x^2 - 28x + 12

3x^2(7x - 3) - 4(7x - 3)

The common factor in this is 7x - 3. Use the distributive property to bring it out.

(7x - 3) [(3x^2 ) - 4]

(7x - 3)(3x^2 - 4)

You could factor 3x^2 - 4 but most times, since you can't reduce this to an integer result, you just leave it as it is.

If you have to use surds then the answer could be

(7x - 3)(√3 - 2)(√3 + 2)

Answer Link
azocher26
azocher26 azocher26
  • 04-05-2021

Answer:

(7x-3) (3x^2-4)

Step-by-step explanation:

Ver imagen azocher26
Answer Link

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