Question

2 - 4x if x = -2
2 + -4x =
2 + -4( ) =

Explanation:

Step1: Substitute x value

We know \( x = -2 \), so substitute \( x \) into the expression \( 2 - 4x \) (which is rewritten as \( 2 + (-4x) \)). So we put \( -2 \) in the parentheses: \( 2 + -4(-2) \)

Step2: Calculate the multiplication

First, calculate \( -4 \times (-2) \). The product of two negative numbers is positive, so \( -4 \times (-2) = 8 \)

Step3: Calculate the addition

Now add 2 and 8: \( 2 + 8 = 10 \)

Answer:

First, fill in the parentheses with \(-2\). Then, \(2 + -4(-2)=2 + 8 = 10\). So the value of the expression when \(x = -2\) is \(10\), and the number in the parentheses is \(-2\).