Example

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

Question

$$(x^{2}+y^{2}-z^{2})^{2}-(x^{2}-y^{2}+z^{2})^{2}$$

Evaluate

$4\left(xy\right)^{2}-4\left(xz\right)^{2}$

Expand

$4\left(xy\right)^{2}-4\left(xz\right)^{2}$

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