Question

Q.7 If a & B are zeros of the polynomial. 3x^2-5x-2, find a^3+ ß^3.​

Answer 1

Answer:

73/8

Step-by-step explanation:

3x²-5x-2 can also be written as:

3x²-6x+x-2=0

3x(x-2)+1(x-2)=0

(3x+1)(x-2)=0

So x=-1/3,which is a

2,which is B

So,a³+B³=(-1/3)³+(2)³

=1/9+8

=(1+72)/8

=73/8