1.6(6.4² -3.6²) /0.4(2.4² -0.4²)=1.6(6.4-3.6)(6.4+3.6)
/ 0.4(2.4-0.4)(2.4+0.4) = 1.6(2.8*10) /0.4(2*2.8) = 4*10 /2 =2*10 =20
Раскрываем скобки,приводим подобные,вычисляем
5x-y*5x+y*2a+16-
<span>2a2</span>+6a=25x2y2+8a2+16-2a=25x2y2+6a+16
A(t)=12t²+4 v(t)=∫(12t²+4)dt=12/3t³+4t=4t³+4t+c v(1)=8+c=10 c=2
v(t)=4t³+4t+2 м/сек
x(t)=∫(4t³+4t+2)dt=t⁴+2t²+2t +c1 x(1)=5+c1=12 c1=7
x(t)=t⁴+2t²+2t+7 м
0 = (a , b) = -1 * 5 + 2*x + 3*(-1) = 2x - 8
x = 4