Example

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

Question

$${ x }^{ 3 } - { y }^{ 3 } -(3 { x }^{ 3) } + { y }^{ 3 } =$$

Answer

$$-2*x^3$$

Solution


Remove parentheses.
\[{x}^{3}-{y}^{3}-3{x}^{3}+{y}^{3}\]
Collect like terms.
\[({x}^{3}-3{x}^{3})+(-{y}^{3}+{y}^{3})\]
Simplify.
\[-2{x}^{3}\]
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