Question

is this correct? if not please expalin why
Problem => (1/7x^2 – 2/5)(1/2x + ½)
My answer is:
(1/7X^2 – 2/5)(1/2x + ½)
= (1/7 * x^2 – 2/5) * (1/2*x + ½)
= 0.071 * x^3 + 0.071 * x^2 – 0.2 * x -0.2
= 0.071 * (x + 1.673) * (x + 1) * x – 1.673

Answer 1

Is this the original expression?\[\frac{1}{7x^2} – \frac{2}{5}\left( \frac{1}{2x} +\frac 12 \right)\]

Answer 2

I am lost

Answer 3

I think I made a mistake above and the expression should be this.\[\left( \frac{1}{7x^2} – \frac{2}{5} \right)\left( \frac{1}{2x} +\frac 12 \right)\]

Answer 4

yes

Answer 5

Well, I am also confused because, from what I can tell about your work above, are the x's in the numerator or the denominator?

Answer 6

I believe the denominator (bottom)

Answer 7

(1/7 * x^2 - 2/5)(1/2 *x + 1/2)

Answer 8

thats how i read it....

Answer 9

\[\frac{1}{14x^3}+\frac{1}{14x^2}-\frac{1}{5x}-\frac{1}{5}\]

Answer 10

then if i used the calculator how come it comes up with my answer that was shown ? how far off am I ? i am totallly confused now

Answer 11

it says to find the product, is that not what I did?

Answer 12

can you please show me the steps on how you got the answer ?

Answer 13

I just did the FOIL method.