a student factors a6 - 64 to (a2 - 4)(a4 + 4a2 + 16). which statement about (a2 − 4)(a4 + 4a2 + 16) is correct? the expression is equivalent and is completely factored. the expression is equivalent, but the (a2 – 4) term is not completely factored. the expression is equivalent, but the (a4 + 4a2 + 16) term is not completely factored. the expression is not equivalent.
