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25-09-2018
Mathematics

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For y = 3x - 2x2 +5x3, show how to find the value for y, when x = 3. Show your work

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Аноним Аноним

25-09-2018

Y=3(3)-2x2+5x3

First multiply 3 and 3

y=9-2x2+5x3

Now multiply 2 and 2

y=9-4+5x3

now multiply 5 and 3

y=9-4+15

9-4+15=20

So Y=20

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