Question

find the value of the polynomial 2x-2xcube + 7 using given values for x am in 9std sunaina's here ​

Answer 1

Answer:

we have to substitute 1 negative number, one positive number and 0 instead of x

Step-by-step explanation:

value of polynomial 2x - 2x^3 +7

when x=3

2(3)-2(3)^3+7

6-54+7

13-54

x=7

when x= -1

-2( -1)^3 +7

-2+2+7

=7

when x= 0

2(0)-2(0)^3+7

0+0+7

=7

if x=3 is the value of the polynomial = -41

if x= -1 is the value of the polynomial = 7

if x=0 is the value of the polynomial = 7