Question

Find the value of the polynomial 5x – 4x2 + 3 at (i) x = 0 (ii) x = – 1 (iii) x = 2

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Answer 1

Answer:

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Answer 2

Answer:

The values are i) 3, ii) -6 and iii) -3

Step-by-step explanation:

Given :  the polynomial is 5x - 4x² +3

Solution :

i) for x = 0, 5x - 4x² +3 = (5x0 )- (4 x0²) +3

                                    = 0-0+3

                                    = 3

ii) for x= -1, 5x - 4x² +3 = (5 x -1) - (4 x -1²) +3

                                    = -5 -4 +3

                                   = -6

iii) for x=2, 5x - 4x² +3 = ( 5 x 2) - (4 x 2²) +3

                                   = 10 - 16 +3

                                  = -3