michalgoldblatt michalgoldblatt

23-03-2020
Mathematics

contestada

The equation 4x^2+8x+15=0

Respuesta :

ghanami ghanami

23-03-2020

Answer:

Step-by-step explanation:

hello :

4(x²+2x)+15=0

4(x²+2x+1-1)+15=0

4(x+1)²- 4 +15 = 0

(x+1)² = - 11/4 no solutions in R because : (x+1)² ≥ 0

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