escreva as equacoes na forma geral a)x²=7x-12 b)2x²-3x=2x-1 c) 2x(4x-1)=21 d)(x-2)²=0 e) 1- (x-2)(x+1)=-1 f)(3x+1)²+(x-2)(x+1)=-1
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a)x²=7x-12
)x²-7x+12=0
b)2x²-3x=2x-1
2x²-3x-2x+1 =0
2x²-5x+1=0
c) 2x(4x-1)=21
8x²-2x-21=0
d)(x-2)²=0
x²-4x+4=0
e) 1- (x-2)(x+1)=-1
1-(x²+x-2x-2) +1=0
1 -x²-x+2x+2 +1=0
x²+x+4=0
f)(3x+1)²+(x-2)(x+1)=-1
9x²+6x+1+x²+x-2x-2-1=0
10x²+5x-2=0
)x²-7x+12=0
b)2x²-3x=2x-1
2x²-3x-2x+1 =0
2x²-5x+1=0
c) 2x(4x-1)=21
8x²-2x-21=0
d)(x-2)²=0
x²-4x+4=0
e) 1- (x-2)(x+1)=-1
1-(x²+x-2x-2) +1=0
1 -x²-x+2x+2 +1=0
x²+x+4=0
f)(3x+1)²+(x-2)(x+1)=-1
9x²+6x+1+x²+x-2x-2-1=0
10x²+5x-2=0
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