Respuesta :

Answer:

x^2−49

Step-by-step explanation:

these are the factors which would be obtained by factoring the difference of two squares which results in x^2-49

Use the foil method (first, outer, inner, last)

First: x * x or

Outer: x * -7 or -7x

Inner: 7 * x or 7x

Last: 7 * -7 or -49

The expression is x² - 7x + 7x - 49 but it can be simplified more. The -7x and 7x cancel each other out and you're left with x² - 49

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