Is this right?:
If the first number in a number line is x^2, and the second number is x^2+1, and the third number is X^2+2, then CALCULATE the sum in terms of "x".
I personally believe the word "calculate" was meant to be "re-write", as there is nothing to calculate..Am I right with this approach?
So, I get XxX, XxX+1, XxX+2..is this correct?
The second question I do not know?..Factorise the answer in previous question..Thank you all kindly..
+118667
If the first number in a number line is x^2, and the second number is x^2+1, and the third number is X^2+2, then CALCULATE the sum in terms of "x".
| n | 1 | 2 | 3 | n |
| x^2 | x^2+1 | x^2+2 | x^2+n-1 | |
| sum | x^2 | 2x^2+1 | 3x^2+3 |
a=x^2
d=1
\(S_n=\frac{n}{2}[2a+(n-1)d]\\ S_n=\frac{n}{2}[2x^2+(n-1)1]\\ S_n=\frac{n}{2}[2x^2+n-1]\\\)
I don't know what they mean about factoring - maybe it is already factored.
