Which expression is equivalent to (21x−2)0 ?(1 point) Responses (21x12y)1 open paren 21 x to the 12th power y close paren to the 1th power 3x2⋅(17)x−2 3 times x squared times 1 seventh x to the negative 2 power 7x27x2 the fraction with numerator 7 x squared and denominator 7 x squared 0x2⋅21x