<span> 7a*a⁴ -2a²*3a³+4a⁵=
7a</span>⁵-6a⁵+4a⁵=5a⁵
<span> (2a²)³/3a*4a³=
</span>2a⁶/12a⁴=a²/6
1. F = kx
10 H = k * 0,01 м
k = 1000 H/м.
2. А = kx²/2 = 1000 * 0,06² / 2 = 1,8 Дж.
1)2a^2+a^2+a^2+2a^2(5-2a)=6a^2(5-2a)=30a^2-12a^3
2)8-(2+a)(3a+4)=8-(6a+8+3a^2+4a)=8-(3a^2+10a+8)=8-3a^2-10a-8=-3a^2-10a
3)2+2x-2x-2x^2+2-4x-x+2x^2= -5x+4
4)x^2-5x-2x+10-x^2-4x-3x+12= -14x+22
1) ...=х²+6х+9-(х²+9х)=х²+6х+9-х²-9х=-3х+9
2) ...=4n²+20n+15-20n-25=4n²-10
3) ...=a²+20a+100-a²-80a=100-60a
4) ...=9x²+12x+4+9x²-9x=18x²+3x+4