Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$D=\dot{x}^{3}+27+(3x-2)(x+3)+(x^{2}-9)$$

Answer

$$D=d*o*t*x^3+18+(3*x-2)*(x+3)+x^2$$

Solution


Remove parentheses.
\[D=dot{x}^{3}+27+(3x-2)(x+3)+{x}^{2}-9\]
Simplify  \(dot{x}^{3}+27+(3x-2)(x+3)+{x}^{2}-9\)  to  \(dot{x}^{3}+18+(3x-2)(x+3)+{x}^{2}\).
\[D=dot{x}^{3}+18+(3x-2)(x+3)+{x}^{2}\]
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