Question

Раскрыть скобки пж​

Answer 1

Ответ:

$(2 + x) \times 4 = 4 \times 2 + 4x = 8 + 4x$

$(7 + x) \times 11 = 11 \times 7 + 11x = 77 + 11x$

Answer 2

Ответ:

Для того чтобы раскрыть скобки, нужно применить распределительное свойство.

$(2+x)*4=2*4+x*4=8+4x\\(7+x)*11=7*11+x*11=77+11x$

Пошаговое объяснение:

Answer 3

Expanding Parentheses

When it comes to expanding parentheses in programming, it usually refers to the process of resolving macros or preprocessor directives in languages like C or C++. These directives are typically enclosed in `#ifdef`, `#ifndef`, `#if`, `#elif`, `#else`, and `#endif` statements. They allow conditional compilation, which means certain parts of the code will be included or excluded based on specific conditions.

To expand parentheses, you need to understand the purpose of each directive and how they affect the code. Here are some commonly used directives:

- `#ifdef` and `#ifndef`: These directives check if a certain macro is defined or not. If the macro is defined, the code between `#ifdef` and `#endif` will be included in the compilation process. If the macro is not defined, the code will be excluded. For example:

  #ifdef DEBUG
      // Debugging code
  #endif
  

In this case, if the macro `DEBUG` is defined, the debugging code will be included; otherwise, it will be excluded.

- `#if`, `#elif`, and `#else`: These directives allow conditional compilation based on expressions. The expressions can involve macros, constants, or other preprocessor directives. For example:

  #if defined(DEBUG) && (VERSION >= 2)
      // Code for debugging version 2 or higher
  #elif defined(DEBUG) && (VERSION == 1)
      // Code for debugging version 1
  #else
      // Code for release version
  #endif
  

In this case, the code will be compiled based on the values of the `DEBUG` macro and the `VERSION` constant.

- `#include`: This directive is used to include header files in the code. The content of the included file will be inserted at the location of the `#include` directive during the compilation process. For example:

  #include 
  

This line includes the standard input/output header file, `stdio.h`, which provides functions like `printf` and `scanf`.

- `#define`: This directive is used to define macros, which are symbolic names representing a certain value or code snippet. Macros can be used to simplify code or make it more readable. For example:

  #define PI 3.14159
  

This line defines a macro `PI` with the value `3.14159`. Any occurrence of `PI` in the code will be replaced with `3.14159` during the preprocessing stage.

To expand parentheses, you need to preprocess the code using a C or C++ compiler. The compiler will replace the macros and directives with their corresponding code or values. The resulting code will then be compiled and executed.

Note: The provided search results do not contain a specific example of expanding parentheses. However, the information provided above is based on general knowledge of C and C++ programming languages.

Let me know if there's anything else I can help you with!