The structuring of expressions is to arrive at the correct answer. Using the 'Order of Precedence' : 1. Brackets; 2. Powers and Roots; 3. Multiplication and Division; 4. Addition and Subtraction, ensures that the correct answer is arrived at.
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3x3. 5x5
gyutdfy
three different expressions for 2 and 3 over 4 = 2 3/4 or 11/4 or 2.75
Manushri
The number 2 can be expressed in many different ways. For example the number2 in roman numerals is expressed as II In binary the number 2 is expressed as 10 Different cultures both past and present also had there own ways of writing the number two The standard Chinese( simple numerals) expression is It can also be expressed many different ways through use of mathematical statements. A few examples are: 1+1, 3-1, 6/3. An algebraic expressions could be x - 6 = -4, x=2