Simplify 22+x+22−x
...Simplify 22+x+22−x
44−x3
84−x2
4x4−x2
8−4x4−x2
Correct answer is B
22+x+22−x
2(2−x)+2(2+x)(2+x)(2−x)=4−2x+4+2x4−2x+2x−x2
= 84−x2
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