Question

Как правильно раскрыть скобки объяснение

Answer 1

A+(B+C)=A+B+C (и главное =(A+B)+C для A,B,C є R, читайте понятие ассоциативности суммирования)
A-(B+C)=A-B-C
A-(B-C)=A-B+C
ну и т. д. до бесконечности (но основная суть - при минусе перед скобкой инвертируем все ЗНАКИ (умножение/деление - операция, никак не знак. Это важно) слагаемых внутри скобок)

Answer 2

How to Properly Expand Brackets Explanation

To properly expand brackets in mathematics, you can follow the order of operations, also known as BODMAS or PEMDAS. This stands for:

Brackets Orders (i.e., powers and square roots, etc.) Division and Multiplication (from left to right) Addition and Subtraction (from left to right)

When expanding brackets, you should first remove any parentheses by multiplying the term outside the brackets by each term inside the brackets. Then, simplify the resulting expression according to the order of operations.

For example, to expand the expression 6(2+3), you would first perform the operation inside the brackets (2+3), and then multiply the result by 6.

The result would be 6*2 + 6*3, which simplifies to 12 + 18, resulting in 30.

This follows the order of operations, where the addition inside the brackets is performed first, and then the multiplication outside the brackets is carried out.