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secondary 2 Maths Singapore

I don't understand

Date Posted: 4 years ago

Ana

4 years ago

-6a (-5 -2a) = 0

So, -6a = 0 or (-5-2a) = 0

-6a = 0
a = 0

or

-5 -2a = 0
-5 = 2a
2a = -5
a = -5/2

a = 0 or a = -5/2

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Date Posted: 4 years ago