Example

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

Question

$$(a-c)(-a+c)$$

Evaluate

$-\left(a-c\right)^{2}$

Expand

$-a^{2}+2ac-c^{2}$

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