Solve .
Answer and explanation
Correct answer: A. or
- Step 1: Find two numbers with sum 7 and product 12; they are 3 and 4. Step 2. So . **Answer: or . Why not the others:** The negative pair has sum , and the pairs and have sums 8 and 13.
Practise more Algebra, Functions, Calculus and Probability.
Free questions with an explanation for every one, and full timed Vitnemål Eksamen (Norway) mock tests.