Question

find the volume of the box .volume is 160 find lenght x+2 width x height 2 so am guesiing that you will write it 160=(x+2)*x*2

Answer 1

yes.

Answer 2

You guess correctly.

Answer 3

so know i am a lil confused on the next step

Answer 4

this is so far what i got and the part that am stuck on x^2+2x*2=160

Answer 5

(x^2+2x)2=160
(x^2+2x)=80
Factor out and x and solve it twice.

Answer 6

am not sure what you mean?

Answer 7

Do you understand how I got from the top line to the bottom one?

Answer 8

yes you divide by two

Answer 9

Now take the x^2+2x and factor out an x: x(...)=80

Answer 10

ok so I get x(x+2)=80 wat do i do after

Answer 11

Whoops. I'm sorry. Take that last step back. x^2+2x=80 => x^2+2x-80=0 Factor that equation.

Answer 12

so know i got(x+10)(x-8)

Answer 13

Well no. That is an expression. You have an equation:

(x+10)(x-8)=0

Solve each of those for 0 and you get two answers.