If A-1 / a = 2, then the value of a & # 178; + 1 / A & # 178; is

If A-1 / a = 2, then the value of a & # 178; + 1 / A & # 178; is


a^2+1/a^2
=(a-1/a)^2+2
=4+2
=6



If 1 + A1 − a = 1 − B1 + B, then (2 + a) (2 + b) + B2=______ .


It is known from the original that (1 + a) (1 + b) = (1-A) (1-B) ‖ a + B = 0, the original formula = 4 + 2A + 2B + AB + B2 = 4 + 2 (a + b) + AB + B2 = 4 + AB + B2 = 4 + B (a + b) = 4



If (a + 1) ² + | B-2 | = 0, find the value of a + B


According to the absolute value and square are non negative
a+1=0 b-2=0
a=-1 b=2
therefore
a+b=-1+2=1