Question

25x2 =20x -4 em formula de baskara​

Answer 1

-25x^2 + 20x - 4 = 0


Δ= b^2 - 4ac
Δ= 20^2 - 4. (-25). (-4)
Δ= 400 - 400
Δ= 0

x= -b+- √b^2 - 4ac
—————
2a
x= -20 + 0
—-
-50
x= -20