When simplifying the expression 9(21x+5x)^2−18x , what is the coefficient of x after the first step?(1 point)

The coefficient of x after the first step is 9(21 + 5) = 9(26) = 234.

nope

Apologies for the mistake. Let's simplify the expression step by step:

9(21x+5x)^2−18x

First, simplify the terms inside the parentheses.
9(26x)^2−18x

Next, square the term inside the parentheses.
9(676x^2)−18x

Finally, distribute the 9 to each term inside.
6096x^2−18x

The coefficient of x after the first step is 18.

nope

Apologies for the incorrect response.

When simplifying the expression 9(21x + 5x)^2 - 18x, we first simplify the terms within parentheses:

9(21x + 5x)^2 - 18x

= 9(26x)^2 - 18x

= 9(676x^2) - 18x

Next, we can distribute the 9 to each term within parentheses:

= 9 * 676x^2 - 9 * 18x

= 6096x^2 - 162x

Therefore, the coefficient of x after the first step is -162.

wrong

Apologies for the previous incorrect response.

When simplifying the expression 9(21x + 5x)^2 - 18x, we first simplify the terms within parentheses:

9(21x + 5x)^2 - 18x

= 9(26x)^2 - 18x

= 9(676x^2) - 18x

Next, we can distribute the 9 to each term within parentheses:

= 9 * 676x^2 - 9 * 18x

= 6084x^2 - 162x

Therefore, the coefficient of x after the first step is -162.

wrong again

Apologies for the mistakes in my previous responses.

Let's simplify the expression step by step:

9(21x + 5x)^2 - 18x

First, we combine like terms within the parentheses:

9(26x)^2 - 18x

This simplifies to:

9(676x^2) - 18x

Next, we distribute the 9 to each term within the parentheses:

9 * 676x^2 - 9 * 18x

This simplifies to:

6084x^2 - 162x

Therefore, the coefficient of x after the first step is -162.

I apologize for my previous incorrect responses. Thank you for bringing it to my attention.