X1*x2=-35
x1+x2=2
x^2-2x-35=0
A) (3² * 3⁵)²/27³ = (3²⁺⁵)²/(3³)³ = 3¹⁴/3⁹=3¹⁴⁻⁹=3⁵=243
б) 32²/[(2⁴)³ * 2⁶]=[(2⁵)²] / [2¹² * 2⁶] = 2¹⁰ / 2¹²⁺⁶=2¹⁰ / 2¹⁸ = 1/2⁸ = 1/256
в) (5⁴ * 10³) / (2³ * 25²) = (5⁴ * (2*5)³) / (2³ * (5²)²) =
=(5⁴ * 2³ * 5³) / (2³ * 5⁴) = (5⁴⁺³ * 2³) / (2³ * 5⁴) =
= (5⁷ * 2³) / (2³ * 5⁴) = 5⁷⁻⁴=5³=125
3,1(х - 7у + 2 z) = 3,1x - 21,7y + 6,2z
<span>У=2х-4 при х=0 у=-4
при х=1,5 у=-1</span>