13-01-2017
Mathematics

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Quadratic equations: Factoring

Quadratic equations Factoring class=

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13-01-2017

remember
if ab=0, then assume that a and b equal 0

factor out common term
comon term in 6x^2 and 15x is 3x
3x(2x)+3x(5)=0
3x(2x+5)=0
set each to zero
3x=0
x=0

2x+5=0
2x=-5
x=-5/2

x=-5/2 and 0

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