Question

if (x-1)²=8, then what is the value of (x+1)²​

Answer 1

Answer:

(x-1)²=8

x-1=√8

x=√8+1

then

(x+1)²=(√8+2)²

=8+4√8+4

=12+8√2

Answer 2

Answer:

8

Step-by-step explanation:

x-1=root8

x=root 8 +1

thus,

x+1=root8 +1+1

(root 8 + 2)^2