Áp dụng công thức nhị thức Newton rút gọn biểu thức sau:
($x^{3}$+$y^{5}$+ $z^{4}$+$w^{6}$)$^{7}$ -21.($x^{6}$.$z^{20}$+5.$x^{6}$.$z^{16}$.$w^{6}$+10.$x^{6}$.$z^{12}$.$w^{12}$+10.$x^{6}$.$z^{8}$ .$w^{18}$+5.$x^{6}$.$z^{4}$.$w^{24}$+$x^{6}$.$w^{30}$ +2.$x^{3}$.$y^{5}$.$z^{20}$+10.$x^{3}$. $y^{5}$.$z^{16}$.$w^{6}$+20.$x^{3}$.$y^{5}$.$z^{12}$.$w^{12}$+20.$x^{3}$.$y^{5}$.$z^{8}$. $w^{18}$+10.$x^{3}$.$y^{5}$.$z^{4}$.$w^{24}$+2.$x^{3}$.$y^{5}$.$w^{30}$+$y^{10}$.$z^{20}$+5.$y^{10}$.$z^{16}$.$w^{6}$+10.$y^{10}$.$z^{12}$.$w^{12}$+10.$y^{10}$.$z^{8}$.$w^{18}$+5.$y^{10}$.$z^{4}$.$w^{24}$+ $y^{10}$.$w^{30}$)
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Sinh Học lớp 12
