Mathematics: Which polynomial does the model represent? (1 point) · –x³ + 2x² – 3x + 2 · x² + x – 2 · –x² – x + 2 · –x² + x – 2 for questions 2 and 3, simplify the polynomial. 2. 4x2 + 4 – 5x + x – 2x2 + 8 (1 point) · –2x2 + 4x + 12 · –2x2 – 4x + 12 · 2x2 + 4x + 12 · 2x2 – 4x + 12

Which polynomial does the model represent? (1 point)

Ответ:

raman2003

01.01.2022

To simplify the polynomial 4x^2 + 4 - 5x + x - 2x^2 + 8, first rewrite it to put all the like terms next to one another: 4x^2 - 2x^2 - 5x + x + 4 + 8. Then, add together these like terms: 2x^2 - 4x + 12. So, the correct answer will be the last option.

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Ответ:

roscoe53

17.02.2023

Mathematics

$- 3 \frac{6}{7}$

Step-by-step explanation:

$f(x) = \frac{3}{x + 2} - \sqrt{x - 3} \\ plug \: x = 19 \\ f(19) = \frac{3}{19 + 2} - \sqrt{19- 3}\\ f(19) = \frac{3}{21} - \sqrt{16} \\ f(19) = \frac{1}{7} - 4 \\ f(19) = \frac{1 - 4 \times 7}{7 } \\ f(19) = \frac{1 - 28}{7 } \\ f(19) = \frac{ - 27}{7 } \\ f(19) = - 3 \frac{6}{7}$

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