How do you factor by grouping $7 v^{2} + 48 v - 7$ $7v^2+48v-7$ ?

Question

1535 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-04-29T15:53:16

$7 v^{2} + 48 v - 7$ $7v^2+48v -7$

$= 7 v^{2} + 49 v - 1 v - 7$ $= 7v^2 +49v -1v -7$

$= 7 v (v + 7) - 1 (v + 7)$ $= 7v(v+7) - 1(v+7)$

$= (7 v - 1) (v + 7)$ $= (7v-1)(v+7)$

How do you factor by grouping 7v2+48v−77v^2+48v-7?