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alexdok [17]
3 years ago
7

2 r squared + 3s cubed minus r squared + 40 squared minus r squared if R equals -2 s equals -3 and T equals 5

Mathematics
1 answer:
Flura [38]3 years ago
6 0

2r^2+3s^2-r^2+4t^2-r^2\\\\\text{simplify}\\\\(2r^2-r^2-r^2)+3s^2+4t^2=3s^2+4t^2\\\\s=-3;\ t=5\\\\3(-3)^2+4(5)^2=3(9)+4(25)=27+100=127

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2 years ago
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myrzilka [38]
So you have x^3 - 4x = 0. What you can do is pull out an x from both x^3 and - 4x so it looks like this:

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Then you can find a number that makes the part inside the parentheses turn into zero. For beginners, it may be easier to write it out seperately and solve for x.

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We need to solve for x, so the first step is to add 4 to both sides, so we get something like this:

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5 0
3 years ago
Goran rented a truck for one day. There was a base fee of $19.99 , and there was an additional charge of 94 cents for each mile
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Hope this helps :)
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3 years ago
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