Question

-b2+2b+6240=0 respodam pf e pra hoje

Answer 1

Observe e aprenda:

-b^{2} + 2b + 6240 =0
a= -1
b=2
c=6240
Δ$=2^{2} - 4* (-1) * 6240$
Δ$= 24964$
$x=\frac{-2+- \sqrt{24964} }{-2}$
$x'= \frac{-2-158}{-2} = 80 x"= \frac{-2+158}{-2} = -78$