Question

Find x if , ( x + 2 ) + ( 2 x + 2 ) + 2 ( x + 1 ) + 2 x + 1 = 77

Answer 1

Answer:

x2+1/x2=18

subtract 2.x.1/x on both sides

x2+1/x2-2.x.1/x=18-2.x.1/x

(x-1/x)2=18-2

x-1/x=16

Answer 2

Answer:

X=10

Step-by-step explanation:

(X+2) +(2x+2)+2(X+1)+2x+1=77

X+2+2x+2+2x+2+2x+1=77

7x+7 = 77

7x = 77-7

7x = 70

X = 70/7

x = 10