Question

if x= root 2-1/root 2+1 and y= root 2+1/root2-1 then find the value of x2+5xy+y2
PLS HELP
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Answer 1

Answer:

8.3

Step-by-step explanation:

1 step: substitute x and y=

2 step: 2-1/2+1 +5+ 2+1/2-1

3 step: 1/3 +5 +3/1

4 step: 25/3 = 8.3