Question

What is the value of the expression -3x²y + 4x

when x= -4 and y= 2?
a. -112
b. 80
c. -80
d. 272

Answer 1

The answer of this question is A. -112

Answer 2

`\huge\mathfrak{Answer}`

By Plugging the value of x and y :

• 
  `- 3 {x}^(2) y + 4x`

• 
  `( - 3 * ( - 4) {}^(2) * 2) + (4 * - 4)`

• 
  `( - 3 * 16 * 2) + ( - 16)`

• 
  `- 96 - 16`

• 
  `- 112`

therefore, the answer is - 112