-0,5a(32a^6+48a^3-4a^3-6)=-16a^7-24a^4+2a^4+3a=-15a^7-22a^4+3a
1)х^2y^2(y+x)-2(x-y)
2)(a+3)^3
<span>Sin(-х)+sin(-x)+1 = 0; -sinx - sinх + 1 = 0; -2sinx = -1; sinx = 1/2.</span>
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