Question

Решите пожалуйста
х^2+6х-6х-36>0

х^ 2+25х-30х-750<0

Answer 1

${x}^{2} - 36 > 0 \\ {x}^{2} > 36 \\ x > 6$

${x}^{2} - 5x - 750< 0 \\ d = {b}^{2} - 4ac = 25 + (750 \times 4) = 3025 \\ x_{1} = \frac{ - b + \sqrt{d} }{2} = 30 \\ x _{2} = - 25 \\ - 25 < 0$