Question

please answer if you know don't give wrong answer​

Answer 1

Answer is b-c

I hope it helps

Answer 2

Answer:

2

Step-by-step explanation:

Given a + b + c = 0

a^2 + b^2 + c^2 / a^2 – b c

Let a + b + c = 0

So a + b = - c and c = - a - b

Squaring both sides we get

(a + b )^2 = c^2

Substituting in the given equation we get

a ^2 + b^2 + (a + b)^2 / a^2 – b (- a – b)

a ^2 + b^2 + a^2 + b^2 + 2 ab / a^2 + ab + b^2

= 2 a^2 + 2 b^2 + 2 ab / a^2 + ab + b^2

= 2(a^2 + ab + b^2) / a^2 + ab + b^2

= 2