angelaOR
20.09.2020 •
Mathematics
Miranda simplified the expression 5x+9y-4 she says the Answer is 10xy what errands did Miranda make while combining like terms what should her answer be
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Ответ:
=cos x + (cos 180)(cosx) +sin(180)(sinx))
=cos x+{-1(cos x)+0(sinx)
Note cos 18
= cos x-cos x
=0