Question

verify whether -2 and 1 zeroes of polynomial Чx³-7x²+4​

Answer 1

Answer:

our given polynomial is Чx³-7x²+4​

so all we need to check is whether on replacing x by -2 and 1 giving us zero or not

so first for x = -2

4*-8 - 28 + 4 = -32-28+4 = 56 which is not equal to zero

now for x = 1

4*1-7*1+4 =1 which is also not equal to zero

therefore -2 and 1 are not the zeroes of the polynomial