Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. There is no symbol between 5x and 3.
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3 + 5x is the simplest expression of this problem.
The reciprocal of any number or expression is 1 divided by that number or expression. So, the reciprocal of 4x2 - 5x - 3 is simply 1 / (4x2 - 5x - 3).The reciprocal of any number or expression is 1 divided by that number or expression. So, the reciprocal of 4x2 - 5x - 3 is simply 1 / (4x2 - 5x - 3).The reciprocal of any number or expression is 1 divided by that number or expression. So, the reciprocal of 4x2 - 5x - 3 is simply 1 / (4x2 - 5x - 3).The reciprocal of any number or expression is 1 divided by that number or expression. So, the reciprocal of 4x2 - 5x - 3 is simply 1 / (4x2 - 5x - 3).
In the expression 5x + 3, the coefficient is 5.
There is no equation or inequality, just an expression. An expression cannot have an answer.
If you mean: 5x(3x+2)-8x-7x then the expression can be simplified to 15x^2 -5x