ultrasonicsite
New member
- Joined
- Dec 6, 2006
- Messages
- 11
I can't seem to grasp the concept.
"A negative number is 12 less than its square. Find the number."
OK!!! Let me put this into an equation.
A negative number, "-x", is equal to twelve less than its square, or x^2 - 12. So basically:
. . .x^2 - 12 = -x
Is that okay so far? So em, everything after this is probably wrong.
Let's see... Add 12 to both sides? Nooo wait. Subtract.
-actually no, I am completely lost.
I tried to imput some random numbers in to see what happens:
. . .Assume x=-2
. . .-2=-(2^2)-12
. . .-2=-4-12
. . .-2=-16
That statement is completely false.
"A negative number is 12 less than its square. Find the number."
OK!!! Let me put this into an equation.
A negative number, "-x", is equal to twelve less than its square, or x^2 - 12. So basically:
. . .x^2 - 12 = -x
Is that okay so far? So em, everything after this is probably wrong.
Let's see... Add 12 to both sides? Nooo wait. Subtract.
-actually no, I am completely lost.
I tried to imput some random numbers in to see what happens:
. . .Assume x=-2
. . .-2=-(2^2)-12
. . .-2=-4-12
. . .-2=-16
That statement is completely false.