NO GRAPHING CALC, HELP PLZ Solve the equation by graphing: 5x^3 − 7x^3 − 20x = 0

Question

anonymous · Answer

Hey did you really mean to put x cubed on two of them?

anonymous · Answer

yes i did.

anonymous · Answer

oh so then we can simplify to $$-2x^3-20x=0$$

anonymous · Answer

i do not have graphing calc

anonymous · Answer

=>$$ -2x(x^2+10) $$

anonymous · Answer

it has x-intercepts at x= 0, $$-\sqrt10, \sqrt 10$$

anonymous · Answer

? 
Answer choices
		-1.42, 0, 2.82
 		0 
 		-28.9, 0, 2.82 
 		No solutions

anonymous · Answer

what does this have to do with graphing? What is the exact question? Is there two equations?

anonymous · Answer

this....Solve the equation by graphing: 5x^3 − 7x^3 − 20x = 0

anonymous · Answer

ok then did they want you to plug it in a calculator?

anonymous · Answer

because if they did then from what you are saying it would be positive or negative 3.16. I think though that it is more likely that the middle should be x^2

anonymous · Answer

thts the question and those r the answer choiices..

anonymous · Answer

x= -3.16, 0, 3.16

anonymous · Answer

but no. mayb your right

anonymous · Answer

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