answersLogoWhite

0


Best Answer

Sure you can substitute that. You just have to be careful to avoid division by zero - but the same may happen with other numbers as well. For example:

  • If you have a denominator "x", then you can't substitute "x" by zero.
  • If you have a denominator "x - 1", then you can't substitute "x" by 1, because if you do, the denominator will be zero.
User Avatar

Wiki User

āˆ™ 10y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why can't you substitute 0 for a variable in an expression?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is y-5 -5?

0


Explain how to find restrictions on the variable in a rational equation?

Substitute the variable in the denominator for a value that will make the denominator have a value of 0 or an imaginary number


What is a quadratic expression?

A quadratic expression is an expression which is written in the form ax2+bx+c, where a, b, and c represent constants, x represents a variable, and a is not equal to 0.


In the exponential expression a raise to negative n is a positive integer the variable a cannot be equal to zero Explain why this is so?

a^(-n) = (1/a)^nIf a is 0, the above expression would require division by 0, which is not defined.


How do you write -8 increased by the quotient of 13 and a number as variable expression?

-8 + 13/N, where N ≠ 0.


Is a expression the number multiplied to a variable?

An expression can be that, but it can also be a combination of such terms and other mathematical operations. For example, 3a + 27b^2/sin(27c) provided c is not 0.


What is 20 plus 40x divided by 20x and are there any restrictions on the variable?

1/x + 2, provided x is not 0. If x is 0, the expression is undefined.


What is the difference between a numerical expression and a algebraic expression?

Numerical expressions solely include numbers, while algebraic expressions may contain a variable like x. An example of a numerical expression is 1+2 and an example of an algebraic expression is 2x+3y=0.


How can solve this 3pĀ²-8p+4?

To find the value of ( 3p^2 - 8p + 4 ), you simply substitute the value of ( p ) into the expression. If ( p ) is a specific number or variable, plug it into the equation. For example, if ( p = 2 ): [ 3p^2 - 8p + 4 = 3(2)^2 - 8(2) + 4 ] [ = 3 \cdot 4 - 16 + 4 ] [ = 12 - 16 + 4 ] [ = 0 ] Therefore, when ( p = 2 ), ( 3p^2 - 8p + 4 = 0 ). If ( p ) is a variable and not a specific number, the expression ( 3p^2 - 8p + 4 ) represents a quadratic polynomial that can be factored or evaluated depending on the context or requirements of the problem.


What are the properties of z in a normal distribution?

Z is a variable with mean 0 and variance 1.Z is a variable with mean 0 and variance 1.Z is a variable with mean 0 and variance 1.Z is a variable with mean 0 and variance 1.


Why do you substitute 0 for y when finding the x-intercept?

So that you have an equation = to 0 and can manipulate it in one variable. Y = 2 X - 4 2X - 4 = 0 2X = 4 X = 2 check the graph and see that this is true. Works for all such functions.


How can you determine from an equation if the line will pass through the origin?

For any polynomial equation, there must be no constant term.For equations in general there is no easy way. Substitute 0 for each of the variables and if the resulting expression is 0 then the line passes through the origin.