Because in parenthesis you have to multiply it by something.
(x - y)2 = x2 - 2xy + y2
-12 squared is 144.
No. Negative three squared is POSITIVE nine. The square of ANY number is positive, because if you multiply a negative number by a negative number, the result is positive.
Well, honey, when you multiply x by negative x, you get negative x squared. It's like math's way of saying "two wrongs don't make a right, they make a negative." So, in this case, x times negative x equals negative x squared.
It is: -2x squared
if you take your time youll figure out its e=mc2
x cubed y cubed z squared
(-1)2=1 all squared numbers turn out positive and 12=1 (-1)2=1 all squared numbers turn out positive and 12=1
It's hard to be sure that I definitely understand the question. Let's see if this helps: (122) = 144, so -(122) = -144 (-122) = 144, so -(-122) = -144
(x2y2)3 + (x3y3)2 = 2x6y6.
19
7 squared is 49 and 5 squared is 25. So the difference is 49-25=24
75r^2-48 You can take out 3.So... 3(25r^2-16) 3-parenthesis-25r squared-minus-16-parenthesis (:
Assuming the second term is (-x)2 rather than -(x2), there is no difference. If the second term IS -(x2), then the difference is 2x2
-3^2 = -9, It is -3 x 3 = -9, unless its in parenthesis, which would be (-3)^2, this equation is -3 x -3, which equals 9. Since a negative and a negative in multiplication is always positive.9
10 sq is 100 9 sq is 81 100-81 is 19
If you were to do -92, following the order of operations, exponents come before subtraction. Because of this -92 = -(92) which is -81. The quantity negative nine, squared, however is positive 81. In order to show that you want the entire quantity negative nine squared, you must use parenthesis (or brackets): (-9)2 = 81. This shows to do the "subtraction" first.