Question

find the value of the polynomial 5x-4x2+3 at x=2​

Answer 1

Answer:

The answer will be

5×2-4×2+3

10-8+3

13-8

5

Answer 2

Answer:

$5 \times x - 4 {x}^{2} + 3 \\ = (5 \times 2) - 4 {2}^{2} + 3 \\ = 10 - 4 \times 4 + 3 \\ = 10 - 16 + 3 \\ = 10 + 3 - 16 \\ = 13 - 16 \\ = - 3$

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