SAT Exponents and Radicals: The Rules You Must Know
A cheat sheet for Digital SAT exponent rules, radical simplification, and the fractional-exponent conversion that unlocks half these problems.
Core Exponent Rules
These show up on every Digital SAT.
- a^m · a^n = a^(m+n)
- a^m / a^n = a^(m−n)
- (a^m)^n = a^(mn)
- a^0 = 1
- a^(−n) = 1/a^n
- a^(1/n) = n-th root of a
Radicals Are Just Fractional Exponents
√x = x^(1/2), ∛x = x^(1/3). Converting radicals to fractional exponents often makes a messy SAT problem collapse into a clean one.
Related Posts
- SAT Quadratics Guide: Every Formula and Trick
Quadratics appear on nearly every Digital SAT Math module. Here's every formula, factoring trick, and Desmos shortcut you need.
- Every SAT Math Formula You Need to Memorize
The complete list of Digital SAT math formulas to memorize — including what the reference sheet already covers and what it doesn't.
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