Question

If the zeros of the polynomial r_3r? + x + I are a - B. a and a + B. find a B.
Obtain all other zeros of x 7x} + 13x5x -- 2. if two of its zeros are 2 + 15.​

Answer 1

Answer:

two zero's of equation of 2x

4

−3x

3

−3x

2

+6x−2 are

2

,−

2

then (x+

2

)(x−

2

) is factor of equation given hence

ref. image

⇒(x

2

−2)(2x

2

−3x+1)=(2x

4

−3x

3

−3x

2

+6x−2)

2x

2

−3x+1=0

⇒2x

2

−2x−x+1=0

2x(x−1)−1(x−1)=0

x=

2

1

as x=1

a=

2

1

,b=1

ab=

2

1