The Dumbest mistake u've ever made in a Maths Exam (2 Viewers)

[solomarc20]

In an assessment task, I managed to simplify a question right down in algebra and then get the following answer

2+2=8

Is any1 able 2 top that?

 

[AnandDNA]

lol i havent made a mistake dumber than that lol jkz :rofl: \

In my last maths assesment the question was simplify (4x^2+3)(4x^2-3)

my answer was 16x^2+9 it was pretty dumb as teh question is clerly related to difference of two square, the answer shudda been 16x^2-9 but oh well lol.
I cnt remember prior mistakes i've made in the past

 

[lyounamu]

When I was year 10 (last year), I wrote 6 instead of x in my working out.

 

[conics2008]

ahahaha.. look at mine..

since when does 3+3 = 9

this is the stuff I deal with.. I dont trust my brain

 

[solomarc20]

I blame exam conditions...

 

[4unitfreak]

7 x 7 = 19.
2 x 7 = 9.

- (a + b) = -a + b

t + 1 = t^2.

1/0 = 1.

Classic.

 

[Forbidden.]

Using the useless product rule when I should use the more efficient chain rule in differentiation.

 

[Sandchairs]

a^2 +b^2 =c^2
therefore
a+b =c

NOTE: wasnt me. some1 in the last test did this but the teacher wouldnt say who

 

[tacogym27101990]

in a 4 unit assesment i said:

8+3i -(3-2i) = -3 + 5i

cost me 2 %
still came firs tho =]
stupid dyspraxia..

funny stuff but

 

[tommykins]

1+2 = 4.

 

[Slidey]

1+2 = 4.

For very large values of 1.

 

[Mark576]

lol i havent made a mistake dumber than that lol jkz :rofl: \

In my last maths assesment the question was simplify (4x^2+3)(4x^2-3)

my answer was 16x^2+9 it was pretty dumb as teh question is clerly related to difference of two square, the answer shudda been 16x^2-9 but oh well lol.
I cnt remember prior mistakes i've made in the past

Try again .

 

[namburger]

Integration of (Sin 5@)
= (Sin 6@)/6

Never will forget that mistake

 

[kurt.physics]

Mine would be mistakes a decimal point for a multiplication sign (not the 'x' times sign, the "." one from wikipedia) But this was not completely my fault, the decimal point was literally that big! LOL

But besides that, not simplifying √(225x²), i simplified the x² but not the 225

 

[lyounamu]

lol i havent made a mistake dumber than that lol jkz :rofl: \

In my last maths assesment the question was simplify (4x^2+3)(4x^2-3)

my answer was 16x^2+9 it was pretty dumb as teh question is clerly related to difference of two square, the answer shudda been 16x^2-9 but oh well lol.
I cnt remember prior mistakes i've made in the past

Double-mistake.

The answer is 16x^4 - 9.

 

[Aerath]

You still would have got it wrong if you realised in the exam that you made a mistake as the answer is 16^4 - 9.

16x^4 -9.

 

[lyounamu]

16x^4 -9.

Hahahaha, typing mistake!

Oh well, I am not in a position to lecture people, am I???

Cannot stop laughing.

EDIT: fixed mine as there was typing mistake.

 

[Muz4PM]

Not rounding off to a particular significant figure would rate highly as one of my stupid mistakes.

My biggest maths mistake was probably studying 3 Unit lol.

 

[independantz]

I worked out an extremely long 4 unit, definite integral all the way to the correct answer,when typing it in to the calculator i got the correct answer it was something like 130. However, i wrote 131....>.> lost a mark lol.

 

[Aerath]

Probably the dumbest Maths mistake was back in Year 6, when I was doing those Pre Uni "Selective Trial" thingos. From about Question 10, I screwed up, so for Question 10, I was circling question 11, and for Question 11, I was circling Question 12 etc etc. Got quite a shock when I got my results back.