Simplify .
Answer and explanation
Correct answer: C.
- Step 1: Numerator: . Denominator: . Step 2. Cancel to get . **Answer: . Why not the others:** is what you get if you factorise the numerator with the wrong signs. is what you get if you cancel the wrong factor. is what you get if you cancel the terms.
Practise more Algebra, Analysis, Geometry and Stochastics.
Free questions with an explanation for every one, and full timed Maturität / Maturité (Switzerland) mock tests.