Example

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

Question

$$49 { y }^{ 2 } -126 { y }^{ 2 } +81 { y }^{ 2 }$$

Answer

$$4*y^2$$

Solution


Simplify.
\[4{y}^{2}\]
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