When x = -3
Well that's easy put the three in place of the "X" and add or what ever it says
A mathematical expression in its' most simplistic form, merely assigns a value to a variable. Don't confuse an expression with an equation. An equation requires a solution. An expression cannot be "solved". It only allows you to determine the value of a variable. This is the expression in words "x is equal to 3" (X is the variable which is equal to the constant number 3) This is the expression in numbers "x=3" The expression in words "y is equal to 6" (Y is the variable which is equal to the constant number 6) The expression in numbers is "y=6" I hope you understand now.
True
It's is the formula of a straight line equation
I think you mean zero to negative infinity is {x: x< or equal to 0}
The answer is given below.
I can see no rational expression below.
Zero
It cannot be zero.
When the numbers are negative
4
If one of the denominators becomes equal to zero when checking a solution for a rational expression, it means that the expression is undefined at that point. This is because division by zero is not defined in mathematics. Therefore, the solution you found is not valid for that rational expression.
4
2
This is wrong
Zero is the only scuh number.
-17/10 = -1.7