# Another solve for X problem help

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• Apr 14th 2007, 03:47 AM
thecapaccino
Another solve for X problem help
Six times a positive number when added to the square of a number will produce 16. What is the number?

I have no answer key...sorry.
• Apr 14th 2007, 04:05 AM
CaptainBlack
Quote:

Originally Posted by thecapaccino
Six times a positive number when added to the square of a number will produce 16. What is the number?

I have no answer key...sorry.

let x be the number, then:

6x+x^2 =16

So x(6+x)=16,

and then trial and error gives x=2.

RonL
• Apr 14th 2007, 04:15 AM
thecapaccino
but...plugging in X to check answer
RonL.

If you plug 8 into the equation x(6+x) = 16....it does not equal 16. I get

8(6+8) = 16 (but that does not equal??)

Have I lost the plot?
• Apr 14th 2007, 04:20 AM
CaptainBlack
Quote:

Originally Posted by thecapaccino
RonL.

If you plug 8 into the equation x(6+x) = 16....it does not equal 16. I get

8(6+8) = 16 (but that does not equal??)

Have I lost the plot?

No its a typo should have been 2.

RonL