Find the value of x3+y3+12xy-64 when x=4 -Maths 9th

Find the value of x3+y3+12xy-64 when x=4 -Maths 9th
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On the value of x we put the value 4 When it is in power 64+y3+12x4y-64 64+y3+48y-64 64-64+y3+48y 0+y(y2+48) Y(y2+48)
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