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-\frac{4}{25}+3\left(-\frac{2}{5}\right)+4
Calculate -\frac{2}{5} to the power of 2 and get \frac{4}{25}.
-\frac{4}{25}+\frac{3\left(-2\right)}{5}+4
Express 3\left(-\frac{2}{5}\right) as a single fraction.
-\frac{4}{25}+\frac{-6}{5}+4
Multiply 3 and -2 to get -6.
-\frac{4}{25}-\frac{6}{5}+4
Fraction \frac{-6}{5} can be rewritten as -\frac{6}{5} by extracting the negative sign.
-\frac{4}{25}-\frac{30}{25}+4
Least common multiple of 25 and 5 is 25. Convert -\frac{4}{25} and \frac{6}{5} to fractions with denominator 25.
\frac{-4-30}{25}+4
Since -\frac{4}{25} and \frac{30}{25} have the same denominator, subtract them by subtracting their numerators.
-\frac{34}{25}+4
Subtract 30 from -4 to get -34.
-\frac{34}{25}+\frac{100}{25}
Convert 4 to fraction \frac{100}{25}.
\frac{-34+100}{25}
Since -\frac{34}{25} and \frac{100}{25} have the same denominator, add them by adding their numerators.
\frac{66}{25}
Add -34 and 100 to get 66.