Expand and simplify .
Answer and explanation
Correct answer: B.
- Step 1: Multiply each term: . Step 2. Collect the terms: . **Answer: . Why not the others:** is what you get if you swap the middle and last terms. is what you get if you get the sign of the product wrong. is what you get if you ignore the signs of the numbers.
Practise more Geometry, trigonometry and probability.
Free questions with an explanation for every one, and full timed DTM University Entrance Test (Uzbekistan) mock tests.
More Geometry, trigonometry and probability questions
- A triangle has base 10 and height 6. What is its area?
- What is the sum of the interior angles of a hexagon?
- Using π = 22/7, what is the circumference of a circle with radius 7?
- The legs of a right triangle are 9 and 12. What is the hypotenuse?
- What is the value of sin 30°?
- What is the area of a circle with radius 5?