Respostas
respondido por:
0
10^2-4.3-8(formula de baskara)
100+96
Delta=196
-10+/-raiz quadrada de 196/2.3
X1=-10+14/2.3
X1=4/6
X2=-10-14/2.3
X2=-24/6
X2=-4
100+96
Delta=196
-10+/-raiz quadrada de 196/2.3
X1=-10+14/2.3
X1=4/6
X2=-10-14/2.3
X2=-24/6
X2=-4
respondido por:
6
3x² + 10x - 8 = 0
a = 3; b = 10; c = - 8
Δ = b² - 4ac
Δ = 10² - 4.3.(-8)
Δ = 100 - 12.(-8)
Δ = 100 + 96
Δ = 196
√Δ = 14
a = 3; b = 10; c = - 8
x = - b +/- √Δ = - 10 +/- √196
-------------- ---------------------
2a 2.3
x = - 10 + 14 4 (:2) 2
-------------- = ----- = ------
6 6 (:2) 3
x = - 10 - 14 - 24
-------------- = ------- = - 4
6 6
R.: x = - 4 e x = 2/3
a = 3; b = 10; c = - 8
Δ = b² - 4ac
Δ = 10² - 4.3.(-8)
Δ = 100 - 12.(-8)
Δ = 100 + 96
Δ = 196
√Δ = 14
a = 3; b = 10; c = - 8
x = - b +/- √Δ = - 10 +/- √196
-------------- ---------------------
2a 2.3
x = - 10 + 14 4 (:2) 2
-------------- = ----- = ------
6 6 (:2) 3
x = - 10 - 14 - 24
-------------- = ------- = - 4
6 6
R.: x = - 4 e x = 2/3
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