6.2×& lt； 6370× 10^3+ 1×2>； ×3. 14-2×& lt； 6370× 10^3>； ×3. 14= 12。 Fifty-six

7。 32n can be regarded as 24n, < 2m plus 24n > cubic minus 1\2 times 24n =

8。 Open the test paper = Divide by 4y = Divide by 4y = (2y