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2 years ago

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3. Factor x2 – 6x – 7. A.(x –7)(x –1) B. (x – 7)(x + 1) C. (x + 7)(x – 1) D. (x + 4)(x + 7)

1 answer:

zhuklara [117]2 years ago

8 0

Its B, because (x-7)(x+1)=x^2-6x-7.

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Read 2 more answers

Prove that the product of any two consecutive natural numbers is even.

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Answer with Step-by-step explanation:

Let us assume the 2 consecutive natural numbers are 'n' and 'n+1'

Thus the product of the 2 numbers is given by

$Product=n(n+1)\\\\$

We know that the sum of 'n' consecutive natural numbers starting from 1 is

$S_n=\frac{n(n+1)}{2}\\\\\therefore n(n+1)=2\times S_n............(i)$

Thus from equation 'i' we can write

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