Question

if a=√3-2/√3+2 and b=√3+2/√3-2 then find the value of a²+b²-5ab​

Answer 1

Answer:

substitute the values of a and b in equation to get answer

Step-by-step explanation:

Answer 2

Answer:

189

Step-by-step explanation:

a=√3-2/√3-2

a=(√3-2)(√3-2)/(√3+2)(√3-2)

a=(√3-2)²/(3-2)

a=(√3-2)²=3+4-4√3=(7-4√3)

same as above

b=(√3+2)²=(7+4√3)

now,

a²+b²-5ab=49+48-56√3+49+48+56√3-5(7-4√3)(7+4√3)=98+96-5(49-48)=98+96-5=98+91=189