Question

resolva a equaçao de -4x²+12x-9=0

Answer 1

4x^2 + 12x - 9 = 0
a=4. b=12. c=-9
Delta=b^2 - 4 a c
Delta=(12)^2 - 4 (4) (-9)
Delta= 144 - 16 (-9)
Delta=144 + 144
Delta= 288

X= - b +,- \/Delta / 2a
X= - (12)+,- \/288 / 2(4)
X= - 12 +,- 16,97 / 8
X1=-12+16,97/8》X1 = 4,97/8 》X1 =0,62
X2=-12-16,97/8》X2=-28,97/8》X2=-3,62