x²+x²+2x+1-85=0 por favor genteeeee
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x^2+x^2+2x+1-85
2x^2+2x-84=0
delta=b^2-4ac
delta=2^2-4.2.(-84)
delta=4+672
delta=676
x=-b-/+ raiz de delta/2a
x=-2-26/2.2
x=-28/4
x=-7
x=-2+26/2.2
x=24/4
x=6
2x^2+2x-84=0
delta=b^2-4ac
delta=2^2-4.2.(-84)
delta=4+672
delta=676
x=-b-/+ raiz de delta/2a
x=-2-26/2.2
x=-28/4
x=-7
x=-2+26/2.2
x=24/4
x=6
JaynneSousa:
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de nada
Respondido por
1
2x² + 2x - 84 = 0
a=2 / b=2 / c=-84
Δ=b² - 4 x a x c
Δ=2² - 4 x 2 x (-84)
Δ= 4 + 672
Δ=676
x= -b +- √Δ / 2 x a
x = -2 +- √676 / 2 x 2
x = -2 +- 26 / 4
x'=x'' = -2 +- 26 / 4
x'=x''= 24/4
x'=x''=6
a=2 / b=2 / c=-84
Δ=b² - 4 x a x c
Δ=2² - 4 x 2 x (-84)
Δ= 4 + 672
Δ=676
x= -b +- √Δ / 2 x a
x = -2 +- √676 / 2 x 2
x = -2 +- 26 / 4
x'=x'' = -2 +- 26 / 4
x'=x''= 24/4
x'=x''=6
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