Write an expression to represent the sum of three times the square of a number and -7.

In your expression, what is the value of the constant?

3x^2 + (-7)

The expression to represent the sum of three times the square of a number and -7 is:

3x^2 - 7

In this expression, the constant value is -7.

To represent the sum of three times the square of a number and -7, we first need to assign a variable to the number. Let's use the variable 'x'.

The square of a number can be represented as 'x^2'.

Three times the square of a number can be represented as '3 * x^2'.

To find the sum, we add the result of '3 * x^2' with -7.

So the expression can be written as '3 * x^2 + (-7)'.

In this expression, the constant value is -7.