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Mathematics 11 Online
OpenStudy (anonymous):

Simplify (2x-3)² a) 4x²-9 b) 4x²-6x+9 c)4x²-12x-9 d)4x²-12x+9

OpenStudy (anonymous):

I got B on this. is it right?

OpenStudy (anonymous):

c

OpenStudy (anonymous):

no no sry d z the ri8

OpenStudy (anonymous):

oh wait wrong question i was looking @

OpenStudy (anonymous):

are you sure?

OpenStudy (anonymous):

sure

OpenStudy (anonymous):

expention theorm

OpenStudy (anonymous):

(2x\[2x ^{2}+2*2x*-3+(-3)^{2}\]

OpenStudy (anonymous):

(2x)^2

OpenStudy (anonymous):

It's d.

OpenStudy (anonymous):

how so?

OpenStudy (anonymous):

If you expand it: (2x-3)² = (2x-3)(2x-3) 2x*2x+2x(-3)+(-3)(2x)+(-3)(-3) 4x^2-6x-6x+9 4x^2-12x+9

OpenStudy (anonymous):

ooh, thnx

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