Example

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

Question

$$(abc+7)(abc-7)$$

Evaluate

$\left(abc\right)^{2}-49$

Expand

$\left(abc\right)^{2}-49$

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