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aivan3 [116]
2 years ago
15

Can someone give me a step by step explanation because my teacher doesn’t teach us anything? :(

Mathematics
1 answer:
Alex2 years ago
7 0

Answer:

(7x^2 -1)(x - 2).

Step-by-step explanation:

7x^3 - 14x^2 - x + 2

We can factor this by grouping - that is factoring the first 2 terms and the last 2:

= 7x^2(x - 2)  - 1(x - 2)      <-- the x - 2 is common to both parts so we have:

(7x^2 -1)(x - 2).

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