Question

Решите пж 1,4-32,2(0,5x-2,6) 1-(3√7+8)(3√7-8)

Answer 1

Ответ:

Пошаговое объяснение:

1) 1,4-16,1х+83,72=85,12-16,1х

2) 1-9*7+64=2

Answer 2

To solve the expression, let's break it down step by step:

1. Evaluate 1,4-32,2(0,5x-2,6): First, distribute the 32.2 to the terms inside the parentheses:

1.4 - 32.2 * (0.5x - 2.6)

Next, apply the distributive property by multiplying 32.2 with each term inside the parentheses:

1.4 - 16.1x + 83.72

So the expression becomes:

-16.1x + 85.12

2. Evaluate 1 - (3√7 + 8)(3√7 - 8):

First, apply the difference of squares formula:

(a + b)(a - b) = a^2 - b^2

In this case, a = 3√7 and b = 8.

(3√7 + 8)(3√7 - 8) = (3√7)^2 - 8^2 (3√7 + 8)(3√7 - 8) = 9*7 - 64 (3√7 + 8)(3√7 - 8) = 63 - 64 (3√7 + 8)(3√7 - 8) = -1

So the expression becomes:

1 - (-1) = 1 + 1 = 2

Now the final expression is:

-16.1x + 85.12 * 2

Finally, multiply 85.12 by 2:

-16.1x + 170.24

The simplified expression is: -16.1x + 170.24