1. Parentheses are preceded by a "+". Remove the brackets and the "+"in front of them, and the symbols of the items in brackets remain unchanged.

There is a "-"before the brackets. Remove the brackets and the "-"sign in front of them, and change the symbol of each item in brackets.

For example: -(a5[ power ]-6b)-(7+3b)

=-a^5+6b-7-3b

How to remove brackets from algebraic expressions in mathematics? There is a plus sign in front of the brackets, so remove the brackets directly. For example, a+(a-b) = a+a-b.

There is a minus sign in front of the brackets. Remove the brackets, the plus sign in front of the brackets will become a minus sign, and the minus sign will become a plus sign.

For example: a-(a-b)=a-a+b

How to remove brackets from algebraic expressions can be divided into several situations: 1. Polynomial: If there is a plus sign before the bracket, remove the bracket directly; The minus sign in front of brackets should be removed, and the symbols in brackets should be reversed; The number before the multiplication sign in parentheses should be multiplied by the number in parentheses, that is, expanded. Division is the same as multiplication. 2. Power: expand according to the power formula. 3. Multiply the two brackets: multiply each item in the front bracket by each item in the back bracket, then expand and remove the brackets.

How to do mathematical algebra: put a plus sign in front of the brackets and remove them directly. If it is a minus sign, the plus sign in brackets becomes a minus sign, and the minus sign becomes a plus sign.

Algebraic expression 3(a+b)? Remove the bracket 3(a+b)?

=3(a？ +2ab+b？ )

=3a？ +6ab+3b？

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The algebraic expression after removing the brackets -{-[m-(n-t)]} is =-[-(m-n+t)].

=-(-m+n-t)

=m-n+t

If there is an exponent outside the algebraic expression, how to remove the brackets [-2 (2x+y)] 2-[1/2 (2x+y)+3 (2x+y)] 2+(y+2x)-5?

2 outside [] is a square number.

How to get rid of brackets in mathematics? five

The principle of removing brackets:

Exactly 1+ 1=2.

Negative is positive 1-(- 1)=2.

Addition and subtraction = subtraction =- 3+(- 1)=3- 1=2.

3-(+2)=3-2= 1

thank you

What do you need to pay attention to when removing brackets in junior one mathematics? Parentheses are preceded by a plus sign, and the inside remains unchanged; There is a minus sign in front of it, and all the symbols in it, such as+change-,-change+.

+(-3-2+7)=-3-2+7 -(2-8+ 1)=-2+8- 1

Note the sign change of the numbers in brackets.

If in doubt, please ask questions; If it has been solved, please adopt it.