Question

This question may be a bit confusing but ill try my best to explain it.

0.5 * (x) * (x+2) = 40
X= 8
X + 2 = 10
How does it add up to 40?

Answer 1

use * for times instaed of x

Answer 2

Oh okay sorry lol ill edit

Answer 3

now what is your comment on adding up? we are multiplying

Answer 4

Uhmm this is not english XD, anyways what is the answer if you please?

Answer 5

you havent defined the question yet ...

Answer 6

What do you mean?

Answer 7

I meant how does 0.5 multiplied by 8 multiplied by 10 = 40?

Answer 8

or to be more clear 0.5 multiplied by 8 multiplied by 8 and added by 2 = 40

Answer 9

well .5 means 1/2

and 8*10 = 80

what is 80/2 ?

Answer 10

Okay, but if the values were still X, how would you find 8 and 10?

Answer 11

well, unless youve covered quadratic forms, then theres prolly not much that can be said about it.

you wondering how to multiply has me thinking tat quadratic forms may not be in your repetiore just yet.

Answer 12

Thats a bit rude comment of yours, i have learned quadratic forms for your information, even geniuses in maths make simple mistakes, no need to be so rude.

Answer 13

im not being rude, im making an observation. the conversation really hasnt lead any support otherwise.

but if youve covered quadratic forms then you may consider the quadratic formula for a solution.

Answer 14

distribute the .5x over x+2, subtract the 40, and you will be set up as:

ax^2 + bx + c = 0

the quadratic formula gives us x as:
\[x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]

Answer 15

you can also consider factoring ax^2+bx+c