Пошаговое объяснение:

у = х² + 2х

1) х = 0,5

у = (0,5)² + 2 * 0,5 = 0,25 + 1 = 1,25

2) х = 1/3

у = (1/3)² + 2*1/3 = 1/9 + 2/3 = 1/9 + 6/9 = 7/9

3) х = 5

у = 5² + 2 * 5 = 25 + 10 = 35

4) х = -0,2

у = (-0,2)² + 2 * (-0,2) = 0,04 - 0,4 = -0,36

5) х = -6

у = (-6)² + 2 * (-6) = 36 - 12 = 24

6) х = -3,1

у = (-3,1)² + 2 * (-3,1) = 9,61 - 6,2 = 3,41

[tex]y = {x}^{2} + 2x[/tex]

[tex]x = 0.5 \\ y = (0.5) {}^{2} + 2 \times 0.5 = 0.25 + 1 = 1.25[/tex]

[tex]x = \frac{1}{3} \\ y = ( \frac{1}{3} ) {}^{2} + 2 \times \frac{1}{3} = \frac{1}{9} + \frac{2}{3} = \frac{1}{9} + \frac{6}{9} = \frac{7}{9} [/tex]

[tex]x = 5 \\ y = {5}^{2} + 2 \times 5 = 25 + 10 = 35[/tex]

[tex]x = - 0.2 \\ y = ( - 0.2) {}^{2} + 2 \times ( - 0.2) = 0.04 - 0.4 = - 0.36[/tex]

[tex]x = - 6 \\ y = ( - 6) {}^{2} + 2 \times ( - 6) = 36 - 12 = 24[/tex]

[tex]x = - 3.1 \\ y = ( - 3.1) {}^{2} + 2 \times ( - 3.1) = 9.61 - 6.2 = 3.41[/tex]