Question

Y=x² - 4x³
Find the value of y when x = -1.

Answer 1

y = 5

Explanation:

• 
  `y=x^2-4x^3` (Given)

• Plug x = -1 in the above equation, we find:

• 
  `y=(-1)^2-4(-1)^3`

• 
  `\rightarrow y=1-4(-1)`

• 
  `\rightarrow y=1+4`

• 
  `\rightarrow \red{y=5}`