Question

If A = undar root 3 ― under root 2 / under root 3 + under root 2 and
B = under root 3 + under root 2 / under root 3 ― under root 2 .
Find the value of A square + B square ― 5ab

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

A=√3-√2/√3+√2

B=√3+√2/√3-B+√2

B=1/A-----------(1)

A²+B²-5AB

=A²+B²+2AB-7AB

=(A+B)²-7AB----------------------(2)

Now

A+B

=(√3-√2)/(√3+√2)+ (√3-√2)/(√3+√2)

=1/3-2(√3+√2+√3-√2)

=2√3

SO

=(A+B)²-7AB-

=(2√3)²-7A*1/A

=12-7

=5