Question

prove that root 5 is irrational number​

Answer 1

Answer:

Let root 5 = a/b (a, b are co-prims, integers and b is not = to)

b root 5 = a

Squaring On Both Sides

b square root 5 = a square equation_1

b square = a square /5

a square divides 5

a divides 5

Let a=5c

Substitute A value in equation _1

5b square =a square

5b square =(5c whole square)

b square =25/5 c square

b square = 5c square

b square/5= c square

b square divides 5

b divides 5

Answer 2

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