Example

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

Question

$$15 { x }^{ 2 } y-(8 { R }^{ 2 } +6 { y }^{ 2 } -5 { x }^{ 2 } y)$$

Evaluate

$20yx^{2}-6y^{2}-8R^{2}$

Expand

$20yx^{2}-6y^{2}-8R^{2}$

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