Question

if a+b+c=1 a^(2)+b^(2)+c^(2)=9 a^(3)+b^(3)+c^(3)=1 then (1)/(a)+(1)/(b)+(1)/(c) is brainly​

Answer 1

Answer:

a+b+c=9 and a

2

+b

2

+c

2

=35

Using formula,

(a+b+c)

2

=a

2

+b

2

+c

2

+2(ab+bc+ca)

9

2

=35+2(ab+bc+ca)

2(ab+bc+ca)=81−35=46

(ab+bc+ca)=23

using formula,

(a

3

+b

3

+c

3

)−3abc=(a

2

+b

2

+c

2

−ab−bc−ca)(a+b+c)

a

3

+b

3

+c

3

−3abc=(35−23)×9=9×12=108

Answer 2

Answer:

The most common form of statement in a program uses the assignment operator, =, and either an expression or a constant to assign a value to a variable: variable = expression; variable = constant; The symbol of the assignment operator looks like the mathematical equality operator but in C++ its meaning is different.