Question

A Polynomial in x of the third degree which will vanish when x=1 and x=2 and will have the values 4 and 28 hen x=-1 and x respectively is?

Answer 1

@Luigi0210

Answer 2

@abb0t

Answer 3

@ganeshie8

Answer 4

\(\large P(x) = a(x-1)(x-2)(x-k)\)

Answer 5

plugin x = 1, or x = 2,
it vanishes, rght ?

Answer 6

ys

Answer 7

use the given points to find out the unknowns : \(\large a\) , and \(\large k\)

Answer 8

ok thanks

Answer 9

.... and will have the values 4 and 28 hen x=-1 and x respectively is?
^^^^

Answer 10

there seem to be something missing there... check once :)

Answer 11

x=2

Answer 12

ahh okay..