I am having trouble understanding the exponents here
first I have .........
What expression raised to the fourth power is
81x^12 y^8 z^16?
also I am struggling on find the values of the follwoing polynomials
-x^2-5x-6x, when x=-3 and x=-2?
I do not get this do I plug the given values into the equation and then solve from there? Please help me.
2007-01-17 19:23:41 · 7 answers · asked by Jeff D 1 in Science & Mathematics ➔ Alternative ➔ Other - Alternative
81 = 3 ^4
knowing that (a^n)^m = a^nm
x^12 = (x^4)3 y^8 = (y^4)^2 and z^16 = (z^4)^3
so the expression is 3 x^4 y^2 z^4
your expression can be simplified as -x^2 -11x
for x= 3 it gives -42 , for x=-2 it gives 13
2007-01-18 03:28:36 · answer #1 · answered by maussy 7 · 2⤊ 0⤋
1.
(3X^3)^4(Y^4)^2(Z^4)^4 multiply out to check, in term order
3^4=81..... X^3 raised to the 4th power, means you MULTIPLY exponents If two bases...X^2*X^2 you would add. See the difference? And continue like that down the line.
As you second problem looks, I see nothing to do, but plug in the values given and work.
2007-01-18 23:22:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋
To cut a short story short see the link below
Just one I picked at random which also explains the
problem of the rice and the chess board which was
quite a nice story.
If you are still strugling after reading the article then errr
well
good luck.
2007-01-19 06:07:22 · answer #3 · answered by nick m 2 · 0⤊ 0⤋
3x^3 y^2 z^4. Remember your properties.
As for the two values of x, is there a subscript? If so, then yes, substitute. Otherwise, I don't know what the question is about.
2007-01-18 20:40:57 · answer #4 · answered by Steven X 1 · 0⤊ 0⤋
just plug them in as the first person said. it so easy
2007-01-18 19:06:32 · answer #5 · answered by Anonymous · 0⤊ 0⤋
just plug em in
2007-01-18 04:58:08 · answer #6 · answered by MrZ 6 · 0⤊ 0⤋
i think that you might need a calculator
2007-01-19 03:42:18 · answer #7 · answered by fletch 2 · 0⤊ 0⤋