Question

Form a cubic polynomials whise zeroes are-3,-1 and 2

Answer 1

Step-by-step explanation:

if zeros of any polynomial is 'a', then it's factor is x - a and polynomial can be obtained by multiplying all the factors.

here zeros are -3, -1 and 2, therefore it's factors are

=> (x +3) , (x + 1) and (x - 2)

therefore p(x) = (x+3)(x+1)(x-2)

=> (x²+ 4x + 3)(x-2)

=> x³ + 4x² + 3x - 2x² - 8x - 6

=> x³ + 2x² - 5x - 6