Resposta:
Explicação passo-a-passo:
a) 3x^2-7x+2=0 b) x(2x-1)+6=4(x+1) C) X^2+2x+1=7+x
a = 3 2x^2-5x+2=0 X^2+x-6=0
b = -7 delta = 41 delta = 25
c=2 X= 25+-41/2*2 x=-b+-v25/2
delta= (b)^2-4*a*c X1 = 8 x= -1+-5/2
delta = 49-4*3*2 X2 =-4 X1=2
delta = 49-24 = 25 X2=-3
X= -b+-Vdelta/2*a
X= 7+-10/2*3
X1 = 17/6
X2 = -3/6 > -1/2
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Resposta:
Explicação passo-a-passo:
a) 3x^2-7x+2=0 b) x(2x-1)+6=4(x+1) C) X^2+2x+1=7+x
a = 3 2x^2-5x+2=0 X^2+x-6=0
b = -7 delta = 41 delta = 25
c=2 X= 25+-41/2*2 x=-b+-v25/2
delta= (b)^2-4*a*c X1 = 8 x= -1+-5/2
delta = 49-4*3*2 X2 =-4 X1=2
delta = 49-24 = 25 X2=-3
X= -b+-Vdelta/2*a
X= 7+-10/2*3
X1 = 17/6
X2 = -3/6 > -1/2