October 2020 0 30 Report
1)escreva na forma normal (ax²+bx+c) a)(x+2)²+x=0
b)6(x²-1)-x=14+x²
c)x(x+11)+2(x+21)=0
d)5x²+12x+9=x²=9x+10

2)resolva as equaçoes na forma (ax²+bx=0)
a)-4x²+12x=0
b)6y²-y=0
c)t²+8t=0
d)-20x²-5x=0

3)resolva as equaçoes da forma (ax²+c=0)
a)x²+49=0
b)-7x²+28=0
c)3x²-27=0
d)16y²=9

4)determine o conjunto soluçao de cada uma das seguintes equaçoes de 2 grau .
a)(x-7).(x-3)+10x=30
b)2x(x+1)=x(x+5)+3(12-x)
c)(x-2)²=4-9x
d)x(x-3)-2(x-3)=6

Muito obrigada .
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