Question

find the zeros of the quadratic polynomial x cube + 7 x + 12 and verify the relation between the zeros and its coefficient​

Answer 1

x*3+7x+12

x*2+4x+3x+12

x(x+4)+3(x+4)

(x+4)(x+3)

x+4=0 or x+3

x=-4 or x=-

sum of zeroes = a+b=-b/a

-4+(-3)

-7/1

product of zeroes = a×b=c/a

-4×-3

12=12/1