Curriculum
Course: Mathematics — Second Preparatory
Login

Curriculum

Mathematics — Second Preparatory

Unit 1: Real Numbers

0/10

Unit 2: Algebra

0/8

Unit 3: Geometry

0/12

Unit 4: Statistics

0/4
Text lesson

Square and Cube Root Laws

Mathematics — Second Preparatory

Square and Cube Root Laws

Lesson summary

Lesson summary

  • The square root of a positive number is positive. The cube root is defined for negative numbers too.
  • √(a²) = |a|, and 3√(a³) = a.
  • √(a × b) = √a × √b, and √(a ÷ b) = √a ÷ √b for positive numbers.
  • We simplify a root by taking out the largest perfect square that divides the number under it.
Square and Cube Root Laws · 7 / 7