Question

$(a + 2b) {?}^4$
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Answer 1

Răspuns:

$a^{4}+8a^{3}b +24a^{2} b^{2} + 32ab^{3} +16b^{4}$

Explicație pas cu pas:

$(a+2b)^{2}*(a+2b)^{2}=(a^{2}+4ab+4b^{2}) * (a^{2}+4ab+4b^{2}) = a^{4}+8a^{3}b +24a^{2} b^{2} + 32ab^{3} +16b^{4}$