Practice problem
If xxx is a real number, then x2=?x^2 = ?x2=? (Select all that apply.)
x⋅xx\cdot xx⋅x
x⋅(−x)x\cdot(-x)x⋅(−x)
(−x)⋅x(-x)\cdot x(−x)⋅x
(−x)⋅(−x)(-x)\cdot(-x)(−x)⋅(−x)
Type a concept, like “slope” or “photosynthesis”.
