Question

Multimea solutiilor ecuatiei (x+2) la 2 -5+11 este S=

Answer 1

(x+2)^2-5+11

• Extinzi ( lungesti expresia )

x^2+4x+x-5+11

Calculezi

x^2+4x+10 | D=24

Answer 2

Răspuns:

$(x+2)^{2} - 5 +11 = 0\\ (x+2)^{2} + 6 = 0\\x^{2} + 4x + 4 + 6 = 0\\x^{2} + 4x + 10 = 0\\D=16-40=-24$⇒D<0⇒ nu are solutii in multimea numerelor reale