Check whether the value given in the brackets is a solution to the given equation or not:
(a) n + 5 = 19 (n = 1) (b) 7n + 5 = 19 (n = − 2)
(c) 7n + 5 = 19 (n = 2) (d) 4p − 3 = 13 (p = 1)
(e) 4p − 3 = 13 (p = − 4) (f) 4p − 3 = 13 (p = 0)
If a+b+c=8 and ab+ bc+ca=20, find the value for a3+b3+c3 -3abc
the options are :-
16
32
48
64
please solve this question with explanation