Question

Resolva As Equações Do 2° Grau :
a- X²=7x-10
b- 2x²+1=3x
c- X(x+1)=30
d- X²+2(x+1)=5
e- X²+(x-3)²=(x+3)²
f- X²-¾x+⅛=0
g- X²-3/2x+½=0
h- X=21/x-20
i- X+1/x-8+x+1/x=1
j- 1/x-2+1/x+2=3-x²/x²-4
(Quem Souber Respondam Por Favor, Me Ajudem)

Answer 1

a) 2x-7x=-10/ -5x=-10/ 10÷5=2/ x=2

b) 4x-3x=-1/ 1x=-1/ 1÷1=1/ x=1

c) 1x+1x+1=30/ 2x=30-1/ 2x=29/ 29÷2=14,5/ x=14,5

d) 1x+2+2x+2=5/ 1x+2x=5-2-2/ 3x=1/ 1÷3=0,3/ x=0,3

e) 1x+1x-9=1x+9/ 2x+1x=9+9/ 3x=18/ 18÷3=6/ x=6

(vou fazer as outras e depois te passo o resto)