Question

The value of a polynomial

5x2 + 4x3 – 7 at x = 1 is -

-2

1

3

2​

Answer 1

Answer:

2 is the answer

Step-by-step explanation:

$given \: \: x = 1 \\ \\ 5x {}^{2} + 4x {}^{3} - 7 \\ 5(1) {}^{2} + 4(1) {}^{3} - 7 \\ 5 + 4 - 7 \\ 9 - 7 \\ 2$

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