AS MATHS:using the quadratic formula in C1???

hey, i was just doing C1 AS homework on the quadratic formula, and trying to solve quadratics using the formula. my question is: ive been given questions where the discriminant isnt easy to square root. (eg. root 13)
the question asks me to write the answers to 2 decimal places, but i have to use a calculator in order to get the answer into a non-surd form. and obviously, calculators arent allowed in C1.
SO. am i doing it wrong? should i be able to work them out mentally? if so, how?
im so confuseeeeeeeeeeeeeeeeddddddddddddddddddddddddddddddddddddddddddddddddddddddddd send help

You might get that in the exam, have you learned about special triangles yet? Haven't done maths since last year so I might be on about something completely different though haha anyway there are ways to do it without a calculator

This is incorrect

You will not be asked to give a surd to 2dp in a C1 exam under the current syllabus

Don't know what exam board you're on but in OCR there are only a few places where you ever need to use decimals, trapezium rule, simpson's rule, iteration etc. but most of the time you get asked for exact answer. Always keep in the simplest fractional form so don't forget to convert 2/(sqrt2) to sqrt2. Always read the question.

Did you miss the C1 reference in the title of this thread?

heh well thanksguys, i reckon its like what TenofThem said, maybe its just to test understanding? oh well, on with the show. happy new year by the way!

C1 of OCR? MEI?, Edexcel?... You may know something I don't sir, but to me there was no differentiation (cringe) between boards. Not that it really matters as they are all very similar anyway.

I was saying your reference to numerical methods has nothing to do with the price of fish.