Plzzz make a program for me or give any suggestion

Question

write a method to print the result of
f(x)= 2.4x*x +5.3*x -1.6
take x= -2 or u wll take amy value

.....make dis program or give suggestion or write suntax of d program
Fata1 Err0r
Arun Tomar

Answer 1

but can u xplain by one by one line by commenting on that
how wll come output 18.6 if i put x= -2

Answer 2

「ＨＡＰＰＹ ＴＯ ＨＥＬＰ」 make it wid method in which program can run easily.....

Answer 3

or any other trick also der to solve dis????