Question

Explain and correct the error made by a student who simplified this expression.

–2x – 4x + 8y – y
(–2 – 4)x + (8 – 0)y
–6x + 8y

Answer 1

Mistake: (8-0)y Correction: (8-1)y

Explanation:

Answer 2

Mistake: (8-0)y

Correction: (8-1)y

Explanation:

Explanation:

if 8y/y= 8

then

y/y= 1

Factoring= division

Foiling= multiplication

Disclaimer:

I am human and may make mistakes. Always double check your work with a reliable source.