3 x 10 to the 5th power + 3 x 10 to the 4th power + 2 x 10 to the 2nd power
(-7)^4 = (-7)x(-7)x(-7)x(-7) = (49)x(49) = 2401
3.14 x 10 to the negative 4th power in standard notation is: 0.000314
400,000
25,000
210 to the 7th power (add exponents)
3 x 10 to the 5th power + 3 x 10 to the 4th power + 2 x 10 to the 2nd power
(-7)^4 = (-7)x(-7)x(-7)x(-7) = (49)x(49) = 2401
1.835 x 10 to the negative 4th power in standard notation is 0.0001835
10⁴ means 10 x 10 x 10 x 10 which equals 10,000. You can also call it "10 to the 4th" or "10 to the 4th power"
3.14 x 10 to the negative 4th power in standard notation is: 0.000314
19,647
400,000
25,000
40,100
8.2 x 102 ÷ 6.3 x 104 ≈ 1.302 x 10-2
You add exponents, so it is 10 to the 4th power, which is 10000