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expand (10z+5)*(z^2 - 2z+10) - Wolfram|Alpha
Are these correct?
1. Multiply:
(10z+5)(z^{2 }- 2z+10)
10z^{3} - 15z^{2} + 90z + 50
2. Divide:
16r^{3} - 12r^{2}+ 60r + 16
------------------------
8r+2
2(r^{2 }- r +4)
3. Divide Synthetically:
(2m^{3} + 5m^{2} + 6m -4) / (m +1)
2m^{2} + 3m + 3 R= -7/m+1
4. Subtract 13r^{2 }- 9r + 3 from 7r^{2}- 4r - 8
-6r^{2}+ 13r +5
5. Divide:
18r^{3 }- 9r^{2}+34r +45
--------------------
6r + 5
3r^{2} - 4r + 9
6. Factor:
uv^{2} - 4 - v^{2}+ 4
(u+1)(v^{2} + 4)
7. Factor:
x^{2}(y-7)^{2} + 5x(y-7)^{2} +4(y-7)^{2 }
(y-7)^{2}(x+4)(x-1)
8.Factor:
x^{3 }+ 125
(x+5)(x^{2}-5x+25)
9. Factor:
16a^{4 }- 1
(4a^{2}+1)(4a^{2}- 1)
10. If g(t) = 2t^{2}+11t-10, find t such that g(t) = 11
g(t) = 353
11. Evaluate:
4x^{2}y^{2}+2x^{2}y - 3xy^{2}- 3xy + 6 when x= -2 and y = 2
-2
12. If P(y) = 1/2y -1 then find y such that P(y)= -5
P(y) = - 13/2
And I need help setting up this problem:
Solve this equation:
n^{3}+80n=18n^{2}
Would you set it up as n^{3}+80n+18n^{2}= 0 ?
I'm not sure what my steps need to be to set it up to try and solve it.
Thank you for any help!
allow me to introduce you to Wolfram Alpha ...
expand (10z+5)*(z^2 - 2z+10) - Wolfram|Alpha
I've looked at Wolfram Alpha and many of what I input is not being understood. I am not sure what I am doing wrong with imputing the information? I really need to know if my answers are correct because these are being used as notes for my final tomorrow.
Can you show what you tried at Wolfram Alpha that would not work.
You might Look at this page..
Using those examples may give you some ideas.
Thanks skeeter. I typed it in but I must have had spaces in the wrong spot. For #6 above - which I see I had a typo and left off the u on the end after the second 4... --- ; uv^{2} - 4 - v^{2}+ 4u is the correct answer (u-1)(v^{2}+4)?