Question

Qual Ea Resposta De  -4x²+20x-25=0 ??

Answer 1

$-4^{2}+20x-25=0= delta= b^{2} -4.a.c= delta= 20^{2}-4.(-4).(-25)= delta=400-400=0 x1=20-+ \sqrt{0} /2.4=20/8  x2=20-+ \sqrt{0} /2.4=20/8$