find the products
1) 3x²yz (7x²+2y+z+4w)
2) -2xyz(3x²+2y²+z²-4w²)
please guys I need this sum in full method I don't need only the answer I want to know how to do the sum fully..
if you do the full method of each and every sum then I will mark you as brainlist..
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