Question

find the zeros of the quadratic polynomial 2x*2-7x-9 and also verify the relation between the zeros and the coefficient of the polynomial​

Answer 1

Answer:

x = 4.5 and x= -1

Step-by-step explanation:

$2x^{2} -7x-9=0$

we know that for $ax^{2}+bx+c=0$

roots are:

x=(-b±$\sqrt{b^{2}-4ac }$)/2a;

so here a=2, b= -7, c= -9

x=(-(-7)±$\sqrt{7^{2} -4*2*(-9)}$)/2*2

x=(7±11)/4

x=4.5 or x= -1

so answer is x=4.5 or x= -1