Question

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

Answer 1

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Answer 2

y= 126

Explanation:

The given equation is: y= 3x-2x^2+5x^3

Substituting the value x=3 in the above equation,we get

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

⇒y= 9-2(9)+5(27)

⇒y= 9-18+135

⇒y= 126