Check NCERT Solutions for Class 7 Mathematics (Chapter 4 – Simple Equation) with extra questions. Prepare for CBSE Class 7 Maths exam.

Roots of unity are the roots of the polynomials of the form x n – 1. For example, when n = 2, this gives us the quadratic polynomial x 2 – 1. To find its roots, just set it equal to 0 and solve: x 2 – ...