How to do this? For all r ≠ ±2, r2 − 5r + 6 / r2 − 4 = ?
I give up. please explain what i need to do.
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I give up. please explain what i need to do.
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r^2 − 5r + 6 / r^2 − 4
=( r - 2)( r - 3) / ( r - 2)( r + 2)
= ( r - 3) / ( r + 2)
QED