what is the expansion of ( 2x - 7)2 ??
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(2X-7)^2
(2X)^2 + (7)^2 - (2 x 2X x 7)
4X^2 + 49 - 28X
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(2X)^2 + (7)^2 - (2 x 2X x 7)
4X^2 + 49 - 28X
Hope it helps :)
Pls mark as brainliest :)
pmtibrahim18:
hellow
the expansion is a2 - 2ab + b2 right??
then it should be + 28 x how come - 28
I've done it as a2 + b2 - 2ab
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