The answer is
-15See the attached image for the steps on how I got that answer.
I assume what you mean by this question is an equation like this:
1 + 2 x 3 + 4
Or,
3 x 4 + 6 /div 5
--
What you'd do:
1+2 x 3+4 First, add either 1+2 or 3+4 which is 3 & 7. then, youd multiply your answers as, 3 x 7 which is, 21.
--
Please ask if you have any questions
Your answer is D..... can I have a brainliest???
An expression is defined as a set of numbers, variables, and mathematical operations. The expression that will result in the difference in the squares is (7x+4)(7x-4).
<h3>What is an Expression?</h3>
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The difference between the squares can be written as,

The expression that will result in the difference in the squares will be

Thus, the expression that will result in the difference in the squares is (7x+4)(7x-4).
Learn more about Expression:
brainly.com/question/13947055