9х^2-24ху+16^2
m^2-36
64b^2-25a^2
-0,7*(-10)^4= -0,7*10000= -7000; 5*(-10)^3=5*(-1000)= -5000; получаем: -7000-(-5000)-32= -2000-32= -2032.
a⃗ (-6;3) и b⃗ (5;6)
а*b=(-6)*5+3*6=-12
(1 1/3 * 0,27 - 3 1/3 * 0,15) - 1500 * (-0,1)³ = 1 9/25
1) 1 1/3 * 27/100 = 4/3*27/100= 9/25
2) 3 1/3 * 15/100 = 10/3 * 15/100 = 5/10 = 1/2
3) 9/25 - 1/2 = 18/50 - 25/50 = -7/50
4) 1500 * (-0,1)³ = 1500 * (-0,001) = -1,5
5) -7/50 - (-1,5) = -7/50 + 1 5/10 = -7/50 + 15/10 = -7/50 + 75/50 = 68/50 =
= 1 18/50 = 1 9/25