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Factorise 14x^2 - x - 3
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5 votes
Factorise 14x^2 - x - 3

User Tian
by
8.2k points

2 Answers

3 votes
14x² - x - 3 = 0
14x² - 7x + 6x - 3 = 0
-7x(-2x + 1) -3(-2x + 1) = 0

(-7x-3) & (-2x+1) = 0

Roots: -7x - 3 = 0
-7x = 3
x = -3/7

OR -2x + 1 = 0
-2x = -1
x = 1/2

In short, Your Roots would be 1/2 and -3/7

Hope this helps!
User Dmitry Davydov
by
8.0k points
1 vote
(7x+3)(2x-1)
you have to find the multiples of -3 that when added will give the middle term

User Shane MacPhillamy
by
7.9k points
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