Question

if if two zeros of the polynomial P of (x) is equal to x cube + 2 x square - 9 x -18 are 3 and minus 3 find other zeros of the polynomial P of x ​

Answer 1

Answer:

3and -3(zeroes)can be written as

3and -3(zeroes)can be written as =x-3 =0 and x+3=0

=(x-3) (x+3)

=(x-3) (x+3)=x²-9

=(x-3) (x+3)=x²-9while on dividing x³+2x²-9x-18 by x²-9

=(x-3) (x+3)=x²-9while on dividing x³+2x²-9x-18 by x²-9 we get quotient as x+2

=(x-3) (x+3)=x²-9while on dividing x³+2x²-9x-18 by x²-9 we get quotient as x+2 then , x+2=0

=(x-3) (x+3)=x²-9while on dividing x³+2x²-9x-18 by x²-9 we get quotient as x+2 then , x+2=0x= -2