3 years ago

HELP QUICKLY PLEASE!!! for y = 3x - 2x^2 + 5x^3, show how to find the value for y, when x = 3. please show your work.

2 answers:

7 0

All you need to do is plug in 3 wherever you see an x!
y = 3(3) - 2(3)^2 + 5(3)^3
y = 9 - 2(9) + 5(27)
y = 9 - 18 + 135
y = -9 + 135
y = 126
Hope this helps!

Elena L [17]3 years ago

3 0

3(3)-2(3)^2+5(3)^3

9-2(9)+5(27)

9-18+135

y=126

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