Question
Factorise the following by splitting the middle term:$15a^2 - 14a - 16$
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Answer
$15a^2 - 14a - 16$
$= 15a^2 - 24a + 10a - 16$
$= 3a(5a - 8) + 2(5a - 8)$
$= (5a - 8)(3a + 2).$
$= 15a^2 - 24a + 10a - 16$
$= 3a(5a - 8) + 2(5a - 8)$
$= (5a - 8)(3a + 2).$
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