Question

A student concluded that the solution to the

equation 2x+1+3=0 isr=4
Do you agree? Explain why or why not.

Answer 1

isr=-2. No, i dont agree the student forgot the negative and forgot to dicide the 2 so that the x is by its self.

Steps:

first you have to get the 2x by its self.

2x+1+3=0

-1. -1

-3. -3

2×=-4

÷2 ÷2

Answer 2

the full answer is --I do not agree with the student because there is no real solution.

Solving the equation only gives possible solutions, but you must check them in the original equation.

Checking the solution in the original equation shows that 4 is an extraneous solution.

Explanation: