4.2x10(4)
Just remember to put dot between digits 1 to 9 and then get it into power of it's zeros including dot(point).
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It is: 4.2*10^4
It is: 4.2*10^4
0042000 = 42000 = 4.2*104.
You write 0.00007463 in scientific notation as: 7.463 × 10-5
the answer to how to write 87200 in scientific notation is 8.72*10^4