Question

please answer these questions immediately​

Answer 1

Answer:

1) (4+√5/4-√5)+(4-√5/4+√5).

Rationalising denominator of 4-√5 is 4+√5.

Rationalising denominator of 4+√5 is 4-√5.

Multiply numerator & denominator by 4+√5 & 4-√5.

(4+√5/4-√5×4+√5/4+√5)+(4-√5/4+√5×4-√5/4-√5).

((4)²+(√5)²/(4)²-(√5)²)+((4)²-(√5)²/(4)²-(√5)²).

(16+5/16-5)+(16-5/16-5).

(21/11)+(11/11).

(21/11)+(1).

21/11+1

21+11/11.

32/11.

2) (√5-1/√5+1)+(√5+1/√5-1).

Rationalising denominator of √5+1 is √5-1.

Rationalising denominator of √5-1 is √5+1.

Multiply numerator & denominator by √5-1 & √5+1.

(√5-1/√5+1×√5-1/√5-1)+(√5+1/√5-1×√5+1/√5+1).

((√5)²-(1)²/(√5)²-(1)²)+((√5)²+(1)²/(√5)²-(1)²).

(5-1/5-1)+(5+1/5-1).

(4/4)+(6/4).

(1)+(3/2).

1+3/2.

2+3/2.

5/2.

3) (√3-√2/√3+√2)+(√3+√2/√3-√2).

Rationalising denominator of √3+√2 is √3-√2.

Rationalising denominator of √3-√2 is √3+√2.

Multiply numerator & denominator by √3-√2 & √3+√2.

(√3-√2/√3+√2×√3-√2/√3-√2)+(√3+√2/√3-√2×√3+√2/√3+√2).

((√3)²-(√2)²/(√3)²-(√2)²)+((√3)²+(√2)²/(√3)²-(√2)²).

(3-2/3-2)+(3+2/3-2).

(1/1)+(5/1).

(1)+(5).

1+5.

6.

Sorry I didn't understand other questions.

I think this is your answer.