8.5x10^-7-5.7x10^-7 answer in scientific notation

5x10^2 divide by 7x10^4 what is the answer in standard form

2.7x10^5+4.5x10^5

(1.7x10^-4)(5x10^-5)

(7x10^4)x(5x10^2)

(7x10^4)x(5x10^2) In scientific notation from

(5x10^-9)(7x10^-9)

5.7x10^13

(7x10^5) divided by (7x10^-8)

2.5x10^-9 divided by 5x10^-7

(9.7x10^6) - (2.5x10^6) scientific notation

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