01Question 1
Easy
For x > 0, which expression is equivalent to 1/x⁻³?
Advanced Math
Rewrite an expression without changing its value. You expand and factor polynomials, combine like terms, and use exponent rules, including negative and fractional exponents.
Most wrong choices break one small rule: a minus sign not distributed across parentheses, exponents added instead of multiplied, or the middle term dropped when squaring.
Pick an answer to check it and see why. Practice sets also have grid-ins, where you type the answer.
Easy
For x > 0, which expression is equivalent to 1/x⁻³?
Medium
Which expression is equivalent to (5x − 2)² ?
Hard
Which expression is equivalent to 16x⁴ − 81?
Start a set in this skill. Every answer comes with an explanation.
160 questions in the bank: 36 Easy, 72 Medium, 52 Hard.