5x (5x3+9^2)+4

I got 28x^2+88
I know i wrong but idont know how to do the problem.

I have no idea what the 5x means..five times?

Or the 5x3, is that five times three?

Show us what you did, maybe we can help you. a times b is best written as a*b
x squared is best written x^2

There isn't a value for x. X is just a variable

To correctly solve the expression 5x(5x3+9^2)+4, you need to follow the order of operations (PEMDAS/BODMAS).

1. Start by simplifying any exponents: Since 9^2 equals 81, the expression becomes 5x(5x3+81)+4.

2. Next, evaluate the multiplication inside the parentheses: The expression now becomes 5x(15+81)+4.

3. Continue by adding the numbers inside the parentheses: This gives us 5x(96)+4.

4. Multiply 5x by 96: The expression becomes 480x+4.

Thus, the simplified expression is 480x + 4.

It seems like you made a mistake in distributing the multiplication. Remember that when multiplying a value outside of parentheses by an expression inside the parentheses, you need to multiply each term inside the parentheses separately.