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Simply or evaluate the expressions and equations A - -b if a equals 3 and b equals -2?
5
What else can I help you with?
Do algebraic expressions have equals signs?
no algebraic expressions do not have equal signs but equations do.
How do you evaluate 5 squared?
to evaluate 5 squared you must simply do 5x5. Which equals 25.
How do you determine if a given expression is an equation?
An equation has an equals sign ( = ). Equations assert the absolute equality of two expressions.
How do you evaluate an expression for x equals 5?
The answer is x = 5. There is nothing to evaluate there!
How do you evaluate 15m for m equals 7?
To evaluate 15m for m equals 7, you simply substitute 7 in place of m in the expression. So, 15m becomes 15 * 7. Multiplying 15 by 7 gives you the result of 105. Therefore, 15m, when m equals 7, is equal to 105.
Do algebraic expressions have equals signs?
no algebraic expressions do not have equal signs but equations do.
How are math expressions and math equations different?
Math equations have an equals sign such as: 7+5=12 or 9x6=47+7 Math expressions do not have a equals sign such as: 43-27 or 8x40
What are the solutions to -x squared plus 2x plus 4 and x-2?
These are two expressions, not equations. Expressions do not have solutions, only equations do. NB equations include the equals sign.
Does an equation have an equal sign?
yes. equations have an equals signs and expressions don't
What clues could help determine between equations and expressions?
An equation has the 'equals' sign ( = ) in it. An expression hasn't.
How do you evaluate 5 squared?
to evaluate 5 squared you must simply do 5x5. Which equals 25.
How do you determine if a given expression is an equation?
An equation has an equals sign ( = ). Equations assert the absolute equality of two expressions.
Why does a CPU evaluate the expression 'a' equals 'a' as true?
CPUs, when given mathematical equations, apply the laws of mathematics to those equations. The equation a = a is true by the reflexive property of equality.
How are math expressions and math equations the same?
They are the same except equations use the equal sign =
What is a mathematical expression?
Any "expression" that represents a numeric value. Example: 2+2=4 or x+7=10. Actually the examples above are equations, not expressions. Expressions do not have = signs. 7a and 4x are examples.
How do you simplify 15x 9y-7x 5y?
This is simply a set of algebraic expressions which has no simpler form. Perhaps there should be an equals sign somewhere.
How do you evaluate an expression for x equals 5?
The answer is x = 5. There is nothing to evaluate there!
