SOLUTION: Explain why the equation x(x+4)=12 cannot be solved by solving the two equations x=12 and x+4=12.

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Question 1135718: Explain why the equation x(x+4)=12 cannot be solved by solving the two equations x=12 and x+4=12.
Found 3 solutions by Alan3354, ikleyn, josgarithmetic:
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website!
Because you get the wrong results.

Answer by ikleyn(52786)   (Show Source):
You can put this solution on YOUR website!
.

Because it against the Algebra rules.

Honestly, one can ask million similar nonsensical questions.

It is not the way to learn Algebra.

When I see such problems in the forum, I always think: thanks to my teachers, who never assigned me such nonsensical problems/questions.

Answer by josgarithmetic(39617)   (Show Source):
You can put this solution on YOUR website!
Why? Because "the two equations" say x is 12 and or x is 8. Neither is correct. Look at the given equation to solve. Two factors differing by 4 which make product of 12. This will give x is 2. Basic Multiplication Fact.