Write the value of 20^3 + 30^3 - 50^3 using identities
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20^3+30^3-50^3=3(20)(30)(50). Because when a+b+c=0 then a^3+b^3+c^3=3abc
So,3(30)(20)(50)=
90(1000)
=90000
So,3(30)(20)(50)=
90(1000)
=90000
raiaman10000pa7czs:
But you took 50 as c . You had to take -50, right?
Ya
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