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2.(8x plus12y):-8x -12 y:-20xy
= x**** + (-8x***y) + 24x**y** + (-32xy***) + 16y****
= x**** - 8x***y + 24x**y** - 32xy*** + 16y****
no.2 = 2x**** + [4(2x)***(3y)] + [6(2x)**(3y)**] + [4(2x)(3y)***] + (3y)****
= 16x**** + 98x***y + 216x**y** + 216xy*** + 81y****
NB :
maksudnya ** itu pangkat 2
maksudnya *** itu pangkat 3
maksudnya **** itu pangkat 4