Question

Помогите p^2-24p+121

Answer 1

Ответ:

p²+24p+121=0

D=b²-4ac=24²-4×1×121=576-484,2 корня

x½= -b±√D/2a=-24±2√23/2

x1= -17 ; x2=-7

ответ: x ∈ (-17;-7]

Answer 2

D = 576 - 484 = 92

p1 = $\frac{24 + \sqrt{92} }{2}$ = $\frac{24 + 2\sqrt{23} }{2}$ = $\frac{2(12 + \sqrt{23} )}{2}$ = $12 + \sqrt{23}$

p2 = $\frac{24 - \sqrt{92} }{2}$ = $\frac{2(12 - \sqrt{23} )}{2}$ = 12 - $\sqrt{23}$