Question

can anyone please......​

Answer 1

Answer:

rir2r3 r[rır2 +r2r3 +r3rı] - r

A A A? [ + (s – a) (s – b) (s – b) (s – b) + (s -c)

= s - asa - bs - c

S

A3

(s – a) (s – b) (s – c)

A A² [s – c+s - a +s - b]

S

(s – a) (s b) (s c) |

A3

(s – a) (s – b) (s - c)

A3 3s – (a + b+c)

S

Δ2

3

A3 (3s – 2s)

= (s – a) (s – b) (s c) | S S

Δ2

42 S A3 (3s – 2s) S

S

On simplifying, we get

As - As = 0