square root of 8 equals square root of 4 space x space 2 end root equals square root of 4 x square root of 2 equals 2 square root of 2
left right double arrow 4 square root of 8 equals 4 space x space 2 square root of 2 equals 8 square root of 2
square root of 32 equals square root of 16 space x space 2 end root equals square root of 16 x space square root of 2 equals 4 square root of 2