Question

Please tell answers of these questions ​

Answer 1

9)0.53333

x = 0. 533333333

10x= 5.33333333

100x=53.3333333

90x=48

x= 48/90

x= 8/15

10)x³+2x²-x-2

x³+2x²-x=2

when x= -1

(-1)³+2(-1)²-(-1)

(-1)+2+1

2=2.

it is one of the zeros of that polynomial

when x= 2

(2)³+2(2)²-2

8+8-2

14≠2

it is not a zero of that polynomial