OpenStudy (anonymous):

(x^4-7)+(x^4+7)

5 years ago
OpenStudy (anonymous):

That's definitely meant to be a plus sign?\[\Large {x^4} - 7 + {x^4} + 7 = 2{x^4}\]

5 years ago
OpenStudy (anonymous):

well wat about the 49?

5 years ago
OpenStudy (anonymous):

What 49? Did you mean\[\Large ({x^4} - 7) \times ({x^4} + 7)\]

5 years ago
OpenStudy (anonymous):

ok i was thinking something else

5 years ago
OpenStudy (anonymous):

\[\Large \begin{array}{l} ({x^4} - 7) \times ({x^4} + 7)\\ {x^4} \cdot {x^4} + {x^4} \cdot 7 - 7 \cdot {x^4} - 7 \cdot 7 = {x^8} - 49 \end{array}\]But the question specified addition.

5 years ago
OpenStudy (anonymous):

i know i was thinking of a different way but its addition

5 years ago