2.
a) 16^(⁷/₈) * 4^(¹/₄) = (4²)^(⁷/₈) * 4^(¹/₄)=4^(⁷/₄ + ¹/₄)=4² =16
-1,6n^{9}*a^{2}*(-1,1n^{5}*a^{4}) = 1.76 * n^{14} * a^{6}
P = (a + b) * 2.
Р = (5,1 + 3,768) * 2 = 8,868 * 2 = 17,736 см.
(x - x1)/(x2 - x1) = (y - y1)/(y2 - y1)
3(x - 2) = (y +4)
3x - 6 = y + 4
y = 3x - 10