Tbnrbrain Tbnrbrain

13-01-2021
Mathematics

contestada

factorise :- a²-9ab+4b²

Respuesta :

graceharvill graceharvill

13-01-2021

If it’s negative a^2: -a-9a+4b^2+b
If the thing I’m seeing as negative isn’t then just remove the first negative sign

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