Question

if 4(1+x) + 4 (1-x) = 10 then the values of x are​

Answer 1

Answer:

Correct option is D)

x4+x41=119

Adding 2 on both the sides,

x4+x41+2=119+2

(x2+x21)2=121⇒x2+x21=11

Subtracting 2 on both sides.

x2+x21−2=11−2

(x−x1)2=9⇒x−x1=±3

Hence, x−x1=3.