Question

A number whose square is 4 less than twice the square of 10

Answer 1

let the no. be x
so,
x² = 2(10²) - 4
x² = 200 - 4
x² = 196
hence,
x = 14

Answer 2

hello there!!!!

let the number be x (suppose)
then ATQ, its square = x²
x²= 2 (10)² - 4
x²= 200-4
x²= 196
x= 14

Hope it helps you....