What are the solutions of x squared - 11x + 30 = 0?
Answer and explanation
Correct answer: C. 5 and 6
- Step 1: Find two numbers with sum 11 and product 30: 5 and 6.
- Step 2: Hence (x - 5)(x - 6) = 0.
Answer
5 and 6.
Why not the others: -6 and -5, 11 and 30 and 6 and 5 do not fit.
Practise more Algebra and equations.
Free questions with an explanation for every one, and full timed Tahsili SAAT (Saudi Arabia) mock tests.