abbiemay2001
abbiemay2001
02-04-2015
Mathematics
contestada
expand and simplify (x+7)(x-7)
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SoapyMcTavish
SoapyMcTavish
02-04-2015
7(x+7)(x-7) is in the form (a+b)(a-b) so it's equal to [tex]a^{2}- b^{2} [/tex]
Which give us:
(x+7)(x-7) = [tex] x^{2} - 49[/tex]
Hope this Helps :)
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Panoyin
Panoyin
03-04-2015
(x + 7)(x - 7)
x² - 7x + 7x - 49
x² - 49
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