Question

If 7 is one of the zero of
x3 - 3x2 - 2a, find the value of a.​

Answer 1

Answer:

if 4 is one of 0

Step-by-step explanation:

Polynomial ⇒x

3

−3x

2

−10x+24

4 is a zero of polynomial so (x−4) will be a factor

Ref. image

⇒x

2

+x−6=0

x

2

+3x−2x−6=0

x(x+3)−2(x+3)=0

(x−2)(x+3)=0

x=2,−3

Other two roots ⇒2,−3