Factorise completely.
Answer and explanation
Correct answer: C.
- Step 1: The common factor of and is .
- Step 2: .
Answer
.
Why not the others: is what you get if you take out the wrong common factor. is what you get if you leave out the numerical common factor. is what you get if you take out only the number.
Practise more Algebra and Equations.
Free questions with an explanation for every one, and full timed GCE O/L Mathematics (Sri Lanka) mock tests.
More Algebra and Equations questions
- Solve and give the larger root.
- Solve the simultaneous equations and . Find the value of .
- If , find when and .
- Find the sum of the first terms of the arithmetic progression
- The length of a rectangle is more than its width. Its area is . Find the width.
- In an arithmetic progression the term number is and the term number is . Find the term number .