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\int _{4}^{10}0.6x^{2}\times 0.6\mathrm{d}x
Multiply x and x to get x^{2}.
\int _{4}^{10}0.36x^{2}\mathrm{d}x
Multiply 0.6 and 0.6 to get 0.36.
\int \frac{9x^{2}}{25}\mathrm{d}x
Evaluate the indefinite integral first.
\frac{9\int x^{2}\mathrm{d}x}{25}
Factor out the constant using \int af\left(x\right)\mathrm{d}x=a\int f\left(x\right)\mathrm{d}x.
\frac{3x^{3}}{25}
Since \int x^{k}\mathrm{d}x=\frac{x^{k+1}}{k+1} for k\neq -1, replace \int x^{2}\mathrm{d}x with \frac{x^{3}}{3}.
\frac{3}{25}\times 10^{3}-\frac{3}{25}\times 4^{3}
The definite integral is the antiderivative of the expression evaluated at the upper limit of integration minus the antiderivative evaluated at the lower limit of integration.
\frac{2808}{25}
Simplify.