Algebramedium · Past Paper
Find the LCM of x^2 - 1 and x^2 - 2x + 1.
A(x-1)(x+1)
B(x-1)^2(x+1)
C(x-1)(x+1)^2
D(x^2-1)^2
✓ Correct Answer: B — (x-1)^2(x+1)
x^2-1 = (x-1)(x+1) and x^2-2x+1 = (x-1)^2. LCM is (x-1)^2(x+1).
Share this question
More from Algebra
- The sum of two numbers is 20 and their difference is 4. Find the larger number.
- The root of 2x + 8 = 2 is:
- If x + 7 = 2, what is the value of x?
- If a number is added to its half, the result is 12. Find the number.
- A two-digit number is such that the sum of its digits is 9. If the digits are interchanged, the number increases by 9. Find the number.