ACT® · Math: Number and Quantity
No Formula Sheet: What You Must Memorize
Watch it explained
- How it worksHow does the quadratic formula fall straight out of completing the square, so you never blank on it?
- Worked exampleFind the roots of 2x2 - 7x + 3 = 0 from memory, with no reference sheet anywhere.
- How it worksHow do the exponent rules, the radical rules and difference of squares compress into a few pictures?
- Common mistakeWhy isn't memorizing 40 separate formulas the smart way to prepare for a test with no formula sheet?
Check yourself
Your turnmedium1 of 3
No reference sheet is available. Find the larger of the two solutions of x2 - 10x + 7 = 0.End of topic.