NOTE: the number 2 are all exponents!
Write the sentence (-x)2 ≠ -x2 in words.
Why (-x)2 and -x2 are they not equivalent?
Please provide another example so i can understand better.
2007-10-14 12:27:26 · 6 answers · asked by MaRs 1 in Science & Mathematics ➔ Mathematics
(-x)^2 = (-x)*(-x) = x^2 (cause the multiplication of two negative numbers is a positive number)
On the other hand
-x^2 means that only the x is elevated to 2 so,
-x^2 = -(x*x) = -x^2
2007-10-14 12:34:21 · answer #1 · answered by Carla 4 · 0⤊ 0⤋
Sentence: Quantity negative x squared is not equal to negative x squared.
Reason: Because the 1st one, the variable x with the negative sign is squared so a negative x times negative x will result in positive x while the other one, the x is squared w/o the negative sign so the two are definitely not equal! Understand?!
Try this: If x = 2, substituting it we know that 2^2 is 4, but you will see that the other is - & the other is +
2007-10-14 12:37:54 · answer #2 · answered by selang er uu 2 · 0⤊ 0⤋
the square of the quantity negative x is not equal to -1 times the square of x
(-x)2 = (-x) * (-x) = x2 since multiplying two negatives is a positive
-x2= -1 * x2 = -x2 for negative one is the coefficient of x and doesn't get squared, only the x does
2007-10-14 12:35:32 · answer #3 · answered by Anonymous · 0⤊ 0⤋
"The square of minus x is not equivalent
to the negative of x squared."
The reason is that if you multiply a minus
by a minus, you get a plus.
2007-10-14 12:39:01 · answer #4 · answered by Irv S 7 · 0⤊ 0⤋
(-3)^2 = (-3)*(-3) = 9
-3^2 = -(3*3) = -(9) = -9
2007-10-14 12:35:12 · answer #5 · answered by e2theitheta 2 · 0⤊ 0⤋
Algebra its been 4yrs.
(-x)2 could equal 2x
-x2= x i think idk
2007-10-14 12:40:38 · answer #6 · answered by Anonymous · 0⤊ 0⤋