a ** 2 + b ** 2 + c ** 2 - 2 * a * b
x * y + (a + 4) / (b - 4)
abs(x ** 2 - 5) / (3 * y * (5 * x + (4 * a + b * t) - z))
a ** 2 + b ** 2 + c ** 2 - 2 * a * b
x * y + (a + 4) / (b - 4)
abs(x ** 2 - 5) / (3 * y * (5 * x + (4 * a + b * t) - z))