а) y(-2,5) = x^2 ≈ 6,3; y(1,7) = x^2 ≈ 2,9;б) y(x) = x^2 = 5 => x ≈ ±2,2; y(x) = x^2 = 7,5 => x ≈ ±2,7;в) y(-1,4) = x^2 ≈ 1,9; y(2,8) = x2 ≈ 7,8;г) у(x) = 2,5 => х ≈ ±1,6; у(х) = 5 => x ≈ ±3.
а) y(-2,5) = x^2 ≈ 6,3; y(1,7) = x^2 ≈ 2,9;
б) y(x) = x^2 = 5 => x ≈ ±2,2; y(x) = x^2 = 7,5 => x ≈ ±2,7;
в) y(-1,4) = x^2 ≈ 1,9; y(2,8) = x2 ≈ 7,8;
г) у(x) = 2,5 => х ≈ ±1,6; у(х) = 5 => x ≈ ±3.