Question

explain it Please 1. Find the value of the polynomial 4 + x3 - x + 2x2 at
(i) x = 0 (ii) x = 1 (iii) x = -2​

Answer 1

Answer.

1.)4+x3-x+2x2=put x=0 then

4+0*3-0+2*2=4+0-4=0 Ans.

Answer 2

Answer:

(i) 4 (ii) 8 (iii) 6

Step-by-step explanation:

(i) x = 0

p(0) = 4 + (0)3 - (0) + 2(0)2

= 4 + 0 - 0 + 0

= 4 + 0

p(0) = 4

(ii) x = 1

p(1) = 4 + (1)3 - (1) + 2(1)2

= 4 + 3 - 1 + 2

= 7 - 1 + 2

= 6 + 2

= 8

(iii) x = -2

p(-2) = 4 + (-2)3 - (-2) + 2(-2)2

= 4 + (-8) + 2 + 2(4)

= 4 - 8 + 2 + 8 (-8 and 8 get cancelled)

= 4 + 2

= 6

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