Math Help - Another solve for X problem help

1. 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?

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

let x be the number, then:

6x+x^2 =16

So x(6+x)=16,

and then trial and error gives x=2.

RonL

3. 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?

4. 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