x^2 - 10x + 6 right? okay so no factors of six add up to ten! 2 + 3 doesnt equal 10, 6 + 1 does not equal 10.... HOW DO I FACTOR?! IVE FORGOTTEN EVERYTHING :(
2007-01-31 15:26:04 · 6 answers · asked by =) 1 in Science & Mathematics ➔ Mathematics
If your asking for most factored form, then x^2 - 10x + 6 is most simplified.
However if you are solving for x, use the quadratic formula.
2007-01-31 15:29:05 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You're correct in that you have to bring everything to one side, and set it all equal to zero. So you have x^2-10x+6=0. You've now put the equation in the form ax^2+bx+c=0, so now you can use it in the quadratic formula... which is -b +or- the square root of (b^2-4ac) all divided by 2a. Here's an image to make it easier http://www.gomath.com/htdocs/images/4-3-03(1).gif
Now all you have to do is plug in the numbers. Using the equation I gave you, you know that your "a" is one, your "b" is -10, and your "c" is 6. The answers turn out to be .641 and 9.36
2007-01-31 23:43:47 · answer #2 · answered by RoTpFerD97 3 · 0⤊ 0⤋
You need to start by getting everything on one side, giving:
x*2 -10x + 6 = 0. Since the factors are not obvious by inspection, solve using the quadratic formula for the two roots R1 and R2 (which might be complex), and the factors are then (x-R1)(x-R2).
2007-01-31 23:34:05 · answer #3 · answered by Anonymous · 0⤊ 0⤋
x² - 10x + 6 = 0
Since it won't factor, try completing the square:
x² - 10x + 25 = -6 + 25 .......[25 is (10/2)² ]
(x - 5)² = 19
x - 5 = 屉19
x = 5 ± â19
2007-01-31 23:34:43 · answer #4 · answered by Philo 7 · 0⤊ 0⤋
Sorry, lela, but neither of the answers are -2.
Unfortunately, this cannot be factored. Your only option is to use the quadratic formula.
2007-01-31 23:35:38 · answer #5 · answered by Anonymous · 0⤊ 0⤋
x= -2 Don't ask how i did it I don't even know i just know it makes sense to me so i think it's right. Good Luck!
2007-01-31 23:31:35 · answer #6 · answered by shahalala 1 · 0⤊ 0⤋