Example

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

Question

$$-(-53) \pm \frac{ \sqrt{ { 53 }^{ 2 } -4 \times 1 \times 322 } }{ 2 \times 1 }$$

Evaluate

$53±\frac{39}{2}$

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