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OpenStudy (anonymous):
expand the bracket in the following expressions 1a) (2x+4)(5x-9) 1b) (3x+7y)2
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OpenStudy (anonymous):
1a. 12x-36 1b.6x+14y ........like this??
OpenStudy (anonymous):
thanks yes
OpenStudy (anonymous):
yw :)
OpenStudy (campbell_st):
1a. is actually a quadratic equation is \[10x^2 + 2x -36\] |dw:1341284407155:dw| 1b is a perfect square the grid above could be used \[9x^2 + 42xy + 49y^2\]
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