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math with brackets. When you see a math problem. In evaluating an expression containing a bracketed sub-expression the operators in the sub-expression take precedence over those surrounding it.
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Parentheses or round brackets square brackets or box brackets braces or curly brackets angle brackets. Expanding brackets means multiplying everything inside the bracket by the letter or number outside the bracket. When you see a math problem.
Parentheses are used to group numbers or variables or both.
Simple start from the inside and work your way out. 52c - 3 19 Expand the bracket. After parentheses are used then for clarity we use brackets. Brackets and braces Brackets and braces have the same function as parentheses.
