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x=90
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x≔90
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x=\frac{9\times 10^{3}\times 3\times 3\times 10^{-6}}{\left(3\times 10^{-2}\right)^{2}}
To multiply powers of the same base, add their exponents. Add 9 and -6 to get 3.
x=\frac{9\times 10^{-3}\times 3\times 3}{\left(3\times 10^{-2}\right)^{2}}
To multiply powers of the same base, add their exponents. Add 3 and -6 to get -3.
x=\frac{9\times \frac{1}{1000}\times 3\times 3}{\left(3\times 10^{-2}\right)^{2}}
Calculate 10 to the power of -3 and get \frac{1}{1000}.
x=\frac{\frac{9}{1000}\times 3\times 3}{\left(3\times 10^{-2}\right)^{2}}
Multiply 9 and \frac{1}{1000} to get \frac{9}{1000}.
x=\frac{\frac{27}{1000}\times 3}{\left(3\times 10^{-2}\right)^{2}}
Multiply \frac{9}{1000} and 3 to get \frac{27}{1000}.
x=\frac{\frac{81}{1000}}{\left(3\times 10^{-2}\right)^{2}}
Multiply \frac{27}{1000} and 3 to get \frac{81}{1000}.
x=\frac{\frac{81}{1000}}{\left(3\times \frac{1}{100}\right)^{2}}
Calculate 10 to the power of -2 and get \frac{1}{100}.
x=\frac{\frac{81}{1000}}{\left(\frac{3}{100}\right)^{2}}
Multiply 3 and \frac{1}{100} to get \frac{3}{100}.
x=\frac{\frac{81}{1000}}{\frac{9}{10000}}
Calculate \frac{3}{100} to the power of 2 and get \frac{9}{10000}.
x=\frac{81}{1000}\times \frac{10000}{9}
Divide \frac{81}{1000} by \frac{9}{10000} by multiplying \frac{81}{1000} by the reciprocal of \frac{9}{10000}.
x=90
Multiply \frac{81}{1000} and \frac{10000}{9} to get 90.
Examples
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y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}