Question

please help. 8x^3+40 + 20+100

Answer 1

Well, you can simplify to 8x^3+ 160

Answer 2

Then take out 8, giving you
8(x^3 + 20)

Answer 3

can you divide the problem by 4 and get 2x^3+10 + 5x+25

Answer 4

Only if it is 20x. Did you mean to say 20x or is it 20?

Answer 5

20x

Answer 6

kirby is like gandhi, trying to bring world peace to math...

Answer 7

Oh okay. Then that changes the problem that I wrote above.
ty @trollswillrule

Answer 8

Dear Open Road:
I'd suggest you both double check that you've copied the original problem correctly and type the instructions for this problem that you're supposed to follow. As stated, 8x^3+40 + 20+100, is open to several different interpretations.
Did you want to simplify the expression? Factor it? Graph it?
Best wishes, MM

Answer 9

is it 2x^3+10x^2+5x+25 , it seems highly suspicious like a sandwich without ham or meat

Answer 10

ok. and im guessing after you divide by 4 you factor and get 2x^2(1x+5) + 5(1x+5?

Answer 11

Would hummus be OK? I love it. MM

Answer 12

its 20x everybody

Answer 13

Please, Open Road, type in the original problem again and include instructions.

Answer 14

8x^3+40 + 20x+100 Factor by grouping

Answer 15

are u doing ur assignment on cubic equations? lol no wonder professors are so sad nowadays, hahahaha

Answer 16

im doing a worksheet to freshn up on highschool math before college

Answer 17

8x^3+20x+140=4(2x^3+5x+35), u get a solution of -2.277103687502411 and two imaginary solutions, hence it is not meant to be factorized manually.(use cubic equation)

Answer 18

Dear Open Road:

You've typed the expression 8x^3+40 + 20x+100.
I suspect that it should be 8x^3 + 40x^2 + 20x +100.
I see immediately that 8x^2 can be factored out of the first two terms and 20 out of the last two terms:

8x^2(x+5) + 20(x+5).

So (x+5) is the common factor in the above expression.
Factoring out the x+5 factor, we get 8x^2+20, or 4(2x^2+5).
Thus, the factored form of 8x^3+40 + 20x+100 is (x+5)(4)(2x^2+5).

Best wishes,

MM