Example

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

Question

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

Evaluate

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

Differentiate w.r.t. x

$-2$

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