Question

6.2x=8.1×8.1-1.9×1.9 Evaluate x

Answer 1

6.2x=(8.1+1.9)(8.1-1.9)
6.2x=10(6.2)
x=10

Answer 2

6.2x = 8.1 x 8.1 - 1.9 x 1.9
⇒6.2x = 65.61 - 3.61
⇒6.2x = 62
⇒x =10