(d²+3)(d²+2d+1)=?
please help me
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sorry bro.............
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Answer:
=(d²+3)(d²+2d+1)
=d²(d²+2d+1)+3(d²+2d+1)
=d⁴+2d³+d²+3d²+6d+3
=d⁴+2d³+4d²+6d+3
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