Question

(√2+1) (√2-1)
Plz can anyone solve this with explanation​

Answer 1

Answer:

${ \sqrt{2 } }^{2} - 1 \\ = 2 - 1 = 1$

Answer 2

Answer:

ITS FORMULA IS,

(A)2 +(B)2

MEANS,

(A+B)(A-B)

(A)2-(B)2

THIS 2 MEANS SQUARE

MEANS IF IN THE POINT OF A=2 AND B=1

SO,[2]2-[1]2

4[BECAUSE 2X2=4]-1[BECAUSE 1X1=1]

4-1

3

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