Question

ASSERTION: The value of (-11)3 + (6)3 + (5)3 is -990 REASON: If a + b +c= 0, then a3 + b3 + c3 = 3abc​

Answer 1

ANSWER

both are true

Step-by-step explanation:

In assertion :-(-11)^3+(6)^3+(5)^3=-990

-1331+216+125=-990

-1331+341=-990

-990=-990

LHS=RHS

Hence assertion is true

In reason:- a+b+c=0, then a^3+b^3+c^3=3abc

Here: a=-11 , b=6 , c=5

a+b+c=0 then a^3+b^3+c^3=3abc

-11+6+5=0 then (-11)^3+(6)^3+(5)^3=3.-11.6.5

-11+11=0 then -1331+216+125=-990

0=0 then -1331+341=-990

LHS=RHS -990=-990

LHS=RHS

then reason is true