Question

Divide 21x^3 - 47x^2y + 44y^2 - 40y^2 by 3x - 5y

Answer 1

Answer:

You (try to) divide your number by successive primes 2,3,5,7,11...

Step-by-step explanation:

Example :

Say you want to factor 756

Even number, divide by 2: 756=2⋅378

Even, divide by 2: 756=2⋅2⋅189

Odd, so try 3: 756=2⋅2⋅3⋅63

And again: 756=2⋅2⋅3⋅3⋅21

And again: 756=2⋅2⋅3⋅3⋅3⋅7

7 is a prime, so you're finished.

You write the result as 756=22⋅33⋅7

Answer 2

Step-by-step explanation:

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