Question

6) The value of the polynomial 5x - 4x² + 3 at x=-1 is
A) - 1
B) - 6
C)- 8
D) 0​

Answer 1

QUESTION ---- Find the value of the polynomial 5x - 4x² + 3 at :

(i) x=0 (ii) x = -1 (iii) x = 2

ANSWER

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(i) x = 0

5×0 - 4×0 + 3

=> 3

Answer (I) 3

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(ii) x = -1

5 × (-1) - 4 × 1 + 3

=> -5 - 4 + 3

=> -9 + 3

=> -6

Answer (ii) -6

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(iii) x = 2

5 × 2 - 4 × 4 + 3

=> 10 - 16 + 3

=> 13 - 16

=> -3

Answer (iii) -3

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HOPE IT HELPS :):):):):):):)

Answer 2

Answer:

- 6

Step-by-step explanation:

$p(x) = 5x - 4 {x}^{2} + 3 \\ x = - 1 \\ = p( - 1) = 5( - 1) - 4 { (- 1)}^{2} + 3 \\ = - 5 - 4 + 3 \\ = - 6$

Hence the value is - 6. ( B )

Hope it helps mAtE....

Thank you