Example

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

Question

$$a x ^ { 2 } + ( a ^ { 2 } - 1 ) x - a$$

Evaluate

$\left(x+a\right)\left(ax-1\right)$

Expand

$ax^{2}+xa^{2}-x-a$

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