<span>y=x^3 + 2x^5
y`=3x^2+10x^4</span>
44cos2a = 44(cos²a - sin² a) = 44(1 - sin²a - sin²a) = 44(1 - 2sin²a) = 44 - 88sin²a = 44 - 88*(-0,3)² = 44 - 88*0,09 = 44 - 7,92 = 36,08
5ab-7a(во второй степени)-0.6b
А) 16а^6+40a^3+25+16a^6-8a^3+1+2(16a^6-4a^3+20a^3-5)=32a^6+32a^3+26+32a^6-8a^3+40a^3-10=64a^6+64a^3+16=(8a³+4)²
б) m(4m²-4m+1)-2(m³+1)=4m³-4m²+m-2m³-2=2m³-4m²+m-2