Question

resolva as equação.
1: 4+x(x-4)=x
2: x(x+3)-40=0
3: (x+3)^=1

Answer 1

1: 4+x(x-4)=x
2x-x=4-4
x=0

2: x(x+3)-40=0
2x=40-3
2x=37
x= 37÷2
x= 18,5

3: (x+3)^=1
x=1-3
x=-2