A student performed the following steps to find the solution to the equation

x2 - 2x - 8 - 0. Where did the student go wrong?

Step 1. Factor the polynomial into (x-4) and (x - 2)

Step 2. x-4 = 0 and x - 2 = 0

Step 3. x = 4 and x = 2

Question

Mathematics

Monique Beard

16 June, 11:13

A student performed the following steps to find the solution to the equation

x2 - 2x - 8 - 0. Where did the student go wrong?

Step 1. Factor the polynomial into (x-4) and (x - 2)

Step 2. x-4 = 0 and x - 2 = 0

Step 3. x = 4 and x = 2

+3

Answers (1)

Know the Answer?

Oswaldo Peters · Answer 1

Only the 2 is negative. The 2nd step is incorrect.

Step-by-step explanation:

In this equation, she did the 2nd step wrong because when you use the factors of 8, - 4 and - 2 just get you - 6, not - 2. So, you would have a - 4 and a positive 2.

A student performed the following steps to find the solution to the equationx2 - 2x - 8 - 0. Where did the student go wrong?Step 1. Factor the polynomial into (x-4) and (x - 2)Step 2. x-4 = 0 and x - 2 = 0Step 3. x = 4 and x = 2

A student performed the following steps to find the solution to the equation

x2 - 2x - 8 - 0. Where did the student go wrong?

Step 1. Factor the polynomial into (x-4) and (x - 2)

Step 2. x-4 = 0 and x - 2 = 0

Step 3. x = 4 and x = 2