-0,1x(2x^2+6)(5-4x^2)=(-0,2x^3-0,6x)(5-4x^2)=-1x^3+0 ,8x^5-3x+2,4 x^3=1,4x^3 +0,8x^5-3x
=(а+в)(a²-ab+b²)(а+в)(а²-ав+в²)=(а³+в³)(а³+в³)=(a³+b³)²=a^6+2a³b³+b^6
<span>2 × (1 / 10)² – 2 / 5 × 3 / 10</span>= 2*1/10*1/10-2/5*3/10=1/5*1/10-2/5*3/10=1/50-6/50=-5/50=-1/10
(5a+0.4)^2=25a^2+4a+1.6
(2x-1)(4x^2+2x+1)=2x^3+2x^2+2x-4x^2-2x-1=2x^3-2x^2-1