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When solving a rational equation why it is OK to remove the denominator by multiplying both sides by the LCD and why can you not do the same operation when simplifying a rational expression?
Wiki User
∙ 15y ago
You can multiply both sides by the LCD because as a rule, you can do anything to one side of an equation as long as you do the same thing to the other side. But when you simplify a rational EXPRESSION, you don't have an EQUATION. So there is no other side. So you can't multiply both sides by anything. You can, however, multiply both the numerator and the denominator by the same term (except zero).
Wiki User
∙ 15y ago
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What is an expression which combines variables numbers and at least one operation?
It is an algebraic expression.
Hayley divided y by 4 Which operation is the inverse of what Hayley did?
Multiplying by 4
What is the mathematical phrase containing numbers and operation?
An expression
How do you solve an algebraic equation with a fraction in it?
the fraction means for you to divide but if you are doing inverse operation, you are multiplying.
What is the inverse operation of x3 what do you have to do to get back to x?
The inverse would be dividing because thats the opposite of multiplying.
What does cancel where possible mean in math?
That means that wherever you spot a numerator and denominator that have a common factor,you should should divide the numerator and denominator by their common factor.This operation doesn't change the value of an expression, but it 'simplifies' it. The operation isalso the heart and soul of measurement-unit conversions.It means that if you spot a numerator and denominator that have a common factor, then you should divide the numerator and denominator by their common factor.This operation doesn't change the value of an expression, but it 'simplifies' it. The operation is also the heart and soul of measurement-unit conversions.It means, if you can cancel, cancel. Otherwise don't.This usually refers to simplifying fractions that involve numbers or variables. If the same variable, or factor, appears in the top and in the bottom, you can eliminate it from both without changing the result.
What is PEMDAS rule?
simplifying numerical expression it means to replace the expression with a value resulting from performing the operation involved in the operation. P-parenthesis E-exponent M-multiplication D-idvision A-addition S-ubtraction
What is the inverseof multiplying?
The inverse operation of Multiplying is Dividing.
What type of fraction do you get by multiplying the numerator and denominator by the same number?
You will get an equivalent fraction if you multiply both by a non-zero number. Otherwise you will be trying to execute an illegal operation.
Which operation involves complex numbers requires the use of a conjugate to be carried out?
One operation that is used a lot in quantum mechanics is taking the absolute value of the square of a complex number. This is equivalent to multiplying the complex number by its complex conjugate - and doing this is simpler in practice.
What is the inverse operation of multiplying by 2?
The inverse of multiplying is dividing, so dividing by 2.
Which operation should be performed first when simplifying the expression?
We'll answer this generally, since you haven't provided an expression. A common technique for remembering the order of operations is the abbreviation "PEMDAS", which is turned into the phrase "Please Excuse My Dear Aunt Sally". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction".
What is an expression that contains a variable a number and at least one operation?
That looks like the description of an EXPRESSION. However, an expression need not have "at least one operation"; a single number, or variable, is a perfectly valid expression.
What is an expression which combines variables numbers and at least an operation?
It is an algebraic expression.
What operation is the same as dividing by a fraction?
Multiplying by the reciprocal of the fraction.
What is an operation in math?
An operation is either multiplying, dividing, subtracting, or adding. It's basically what you do to a number.By:Donny Heitler
What expression is the inverse operation of 3020?
3020 is a number, not an operation. A number cannot have an inverse operation.
