Question

x^4-16 find its zeroes

Answer 1

Hi..

x^4-16=0

x^4=16

x=4th root of 16

x=4

zero of this equation is 4

Answer 2

x⁴ - 16 = 0

(x²)² - 4² = 0 [( a² - b²) = (a+b)(a-b)]

(x²-4)(x²+4) = 0

(x - 2)(x+2)(x² + 4) = 0 [( a² - b²) = (a+b)(a-b)]

x = 2,-2,2,-2