Mordkovich 2009 9 Klass Domashnjaja - Kontrolnaja Rabota

Find the set of all integer solutions for the following system:

{x+y=5x2−y=72 cases; Case 1: x plus y equals 5; Case 2: x squared minus y equals 7 end-cases; mordkovich 2009 9 klass domashnjaja kontrolnaja rabota

Solve the rational inequality using the method of intervals: Find the set of all integer solutions for

(x−4)(x+2)x−1<0the fraction with numerator open paren x minus 4 close paren open paren x plus 2 close paren and denominator x minus 1 end-fraction is less than 0 mordkovich 2009 9 klass domashnjaja kontrolnaja rabota