Solve x=3*10^8*8*85*10^-12*(21*7*10^-3)^2

$$x = 3 \times 10 ^ { 8 } \times 8 \cdot 85 \times 10 ^ { - 12 } \times ( 21 \cdot 7 \times 10 ^ { - 3 } ) ^ { 2 }$$

Solve for x

$$x=\frac{1102059}{250000000}=0.004408236$$

Steps for Solving Linear Equation

To multiply powers of the same base, add their exponents. Add 8 and -12 to get -4.

$$x=3\times 10^{-4}\times 8\times 85\times \left(21\times 7\times 10^{-3}\right)^{2}$$

Calculate 10 to the power of -4 and get \frac{1}{10000}.

$$x=3\times \frac{1}{10000}\times 8\times 85\times \left(21\times 7\times 10^{-3}\right)^{2}$$

Multiply 3 and \frac{1}{10000} to get \frac{3}{10000}.

$$x=\frac{3}{10000}\times 8\times 85\times \left(21\times 7\times 10^{-3}\right)^{2}$$

Multiply \frac{3}{10000} and 8 to get \frac{3}{1250}.

$$x=\frac{3}{1250}\times 85\times \left(21\times 7\times 10^{-3}\right)^{2}$$

Multiply \frac{3}{1250} and 85 to get \frac{51}{250}.

$$x=\frac{51}{250}\times \left(21\times 7\times 10^{-3}\right)^{2}$$

Multiply 21 and 7 to get 147.

$$x=\frac{51}{250}\times \left(147\times 10^{-3}\right)^{2}$$

Calculate 10 to the power of -3 and get \frac{1}{1000}.

$$x=\frac{51}{250}\times \left(147\times \frac{1}{1000}\right)^{2}$$

Multiply 147 and \frac{1}{1000} to get \frac{147}{1000}.

$$x=\frac{51}{250}\times \left(\frac{147}{1000}\right)^{2}$$

Calculate \frac{147}{1000} to the power of 2 and get \frac{21609}{1000000}.

$$x=\frac{51}{250}\times \frac{21609}{1000000}$$

Multiply \frac{51}{250} and \frac{21609}{1000000} to get \frac{1102059}{250000000}.

$$x=\frac{1102059}{250000000}$$

Assign x

$$x≔\frac{1102059}{250000000}$$