Question

The expression (11.98 * 11.98 + 11.98 * (x) + 0.02 * 0.02) will be a perfect square for x equal to :
A) 0.01 B) 0.02 C) 0.03 D) 0.04

Answer 1

Answer:

D) 0.04

Step-by-step explanation:

(a ± b)² = a² ± 2ab + b²

(11.98)² + (2×0.02)×11.98 + (0.02)² = (11.98 + 0.02)²

x = 2×0.02 = 0.04