Question

if m=√5-2/√5+2 and n=√5+2/√5-2,find m2+m2+mn​

Answer 1

Step-by-step explanation:

Answer

m

2

+n

2

–2mn

It is given that

m=–2 and n=2

Substituting the values we get

=(−2)

2

+2

2

–2(−2)(2)

By further calculation

=4+4–(−8)

So we get

=8+8

=16