How do you factor by grouping, $r^{2} - 4 t w + 2 w r - 2 t r$ $r^2-4tw +2wr - 2tr$ ?

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How do you factor by grouping, $r^{2} - 4 t w + 2 w r - 2 t r$ $r^2-4tw +2wr - 2tr$ ?

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Answer 1 · 2015-04-21T12:49:00

Collect $r$ $r$ frm the first and third term and $- 2 t$ $-2t$ from the second and fourth:
$r (r + 2 w) - 2 t (2 w + r) =$ $r(r+2w)-2t(2w+r)=$
$= (r + 2 w) (r - 2 t)$ $=(r+2w)(r-2t)$

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How do you factor by grouping, $r^{2} - 4 t w + 2 w r - 2 t r$ $r^2-4tw +2wr - 2tr$ ?

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How do you factor by grouping, r2−4tw+2wr−2trr^2-4tw +2wr - 2tr?

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How do you factor by grouping, $r^{2} - 4 t w + 2 w r - 2 t r$ $r^2-4tw +2wr - 2tr$ ?