Question

reduza as quetões
a- x.(2x-3)=4x-1
b- x.(x-2)+1=2(x+3)
c-(x-3).(x+4)+3=x
2
d-(x-2) =4 -9x

Answer 1

a)x.(2x-3)=4x-1
2x-3x=4x-1
2x-3x-4x=1
-5x=1
x=1
-5

b)x.(x-2)+1=2(x+3)
x-2x+1=2x+6
x-2x-2x=6-1
-3x=5
x=5
-3

c)(x-3).(x+4)+3=x+2
x+4x-3x-12+3=x+2
x+4x-3x-x=2+12-3
x=11

d)(x-2)=4-9x
x+9x=4+2
10x=6
x=6
10
x=6:2
10:2
x=3
5