Me ajudem♡☆¿
Arme e resolva as equações:
1)4(x+3)=1
2)3 (x-2)=2x-4
3)3(x-1)-7=15
4)7(x-4)=2x-3
5)3(3x-1)=4(3-x)
6)3(3x-1)=2(3x+2)
7)7(x-2)=5(x+3)
8)3(2x-1)=-2(x+3)
9)5x-3(x+2)=15
10)2x+3x+9=8(6-x)
11)4(x+10)-2(x-5)=0
12)3(2x+3)-4(x-1)=3
13)13+4(2x-1)=5(x+2)
14)4(x+5)+3(x+5)=21
15)2(x+5)-3(5-x)=10
Soluções para a tarefa
Respondido por
1
1) 4(x+3)=1
4x+15-1=0
a=4 b=15 c=(-1)
delta=b²-4.a.c
delta=15²-4.4.(-1)
delta=225+16
delta=241
2) 3(x-2)=2x-4
3x-6=2x-4
3x-2x-6+4=0
x-2=0
a=0 b=1 c=(-2)
delta=b²-4.a.c
delta=1²-4.0.(-2)
delta=1
3) 3(x-1)-7=15
3x-3-7=15
3x-3-7-15=0
3x-25=0
a=0 b=3 c=(-25)
delta=b²-4.a.c
delta=3²-4.0.(-25)
delta=9
4) 7(x-4)=2x-3
7x-28=2x-3
7x-2x-28+3=0
5x-25=0
a=0 b=5 c=(-25)
delta=b²-4.a.c
delta=5²-4.0.(-25)
delta=25
5) 3(3x-1)=4(3-x)
9x-3=12-4x
9x-4x-12-3=0
5x-15=0
a=0 b=5 c=(-15)
delta=b²-4.a.c
delta=5²-4.0.(-15)
delta=25
6) 3(3x-1)=2(3x+2)
9x-3=6x+4
9x-6x-4-3=0
3x-7=0
a=0 b=3 c=(-7)
delta=b²-4.a.c
delta=3²-4.0.(-7)
delta=9
7) 7(x-2)=5(x+3)
7x-14=5x+15
7x-5x-15-14=0
2x-29=0
a=0 b=2 c=(-29)
delta=b²-4.a.c
delta=2²-4.0.(-29)
delta=4
8) 3(2x-1)= -2(x+3)
6x-3= -2x-6
6x+2x+6-3=0
8x+3=0
a=0 b=8 c=3
delta=b²-4.a.c
delta=8²-4.0.3
delta=64
9) 5x-3(x+2)=15
5x²+10x-3x-6=15
5x²+7x-15-6=0
5x²+7x-21=0
a=5 b=7 c=(-21)
delta=b²-4.a.c
delta=7²-4.5.(-21)
delta=49+420
delta=469
10) 2x+3x+9=8(6-x)
2x+3x+9=48-8x
2x+3x+8x-48+9=0
13x-39=0
a=0 b=13 c=(-39)
delta=b²-4.a.c
delta=13²-4.0.(-39)
delta=169
11) 4(x+10)-2(x-5)=0
4x+40-2x+10=0
4x-2x+40+10=0
2x+50=0
a=0 b=2 c=50
delta=b²-4.a.c
delta=2²-4.0.50
delta=4
12) 3(2x+3)-4(x-1)=3
6x+9-4x+4-3=0
6x-4x+9+4-3=0
2x+10=0
a=0 b=2 c=10
delta=b²-4.a.c
delta=2²-4.0.10
delta=4
13) 13+4(2x-1)=5(x+2)
13+8x-4=5x+10
8x-5x-10+13-4=0
3x-1=0
a=0 b=3 c=(-1)
delta=b²-4.a.c
delta=3²-4.0.(-1)
delta=9
14) 4(x+5)+3(x+5)=21
4x+20+3x+15-21=0
4x+3x+20+15-21=0
7x+14=0
a=0 b=7 c=14
delta=b²-4.a.c
delta=7²-4.0.14
delta=49
15) 2(x+5)-3(5-x)=10
2x+10-15+3x-10=0
2x+3x+10-15-10=0
5x-15=0
a=0 b=5 c=(-15)
delta=b²-4.a.c
delta=5²-4.0.(-15)
delta=25
4x+15-1=0
a=4 b=15 c=(-1)
delta=b²-4.a.c
delta=15²-4.4.(-1)
delta=225+16
delta=241
2) 3(x-2)=2x-4
3x-6=2x-4
3x-2x-6+4=0
x-2=0
a=0 b=1 c=(-2)
delta=b²-4.a.c
delta=1²-4.0.(-2)
delta=1
3) 3(x-1)-7=15
3x-3-7=15
3x-3-7-15=0
3x-25=0
a=0 b=3 c=(-25)
delta=b²-4.a.c
delta=3²-4.0.(-25)
delta=9
4) 7(x-4)=2x-3
7x-28=2x-3
7x-2x-28+3=0
5x-25=0
a=0 b=5 c=(-25)
delta=b²-4.a.c
delta=5²-4.0.(-25)
delta=25
5) 3(3x-1)=4(3-x)
9x-3=12-4x
9x-4x-12-3=0
5x-15=0
a=0 b=5 c=(-15)
delta=b²-4.a.c
delta=5²-4.0.(-15)
delta=25
6) 3(3x-1)=2(3x+2)
9x-3=6x+4
9x-6x-4-3=0
3x-7=0
a=0 b=3 c=(-7)
delta=b²-4.a.c
delta=3²-4.0.(-7)
delta=9
7) 7(x-2)=5(x+3)
7x-14=5x+15
7x-5x-15-14=0
2x-29=0
a=0 b=2 c=(-29)
delta=b²-4.a.c
delta=2²-4.0.(-29)
delta=4
8) 3(2x-1)= -2(x+3)
6x-3= -2x-6
6x+2x+6-3=0
8x+3=0
a=0 b=8 c=3
delta=b²-4.a.c
delta=8²-4.0.3
delta=64
9) 5x-3(x+2)=15
5x²+10x-3x-6=15
5x²+7x-15-6=0
5x²+7x-21=0
a=5 b=7 c=(-21)
delta=b²-4.a.c
delta=7²-4.5.(-21)
delta=49+420
delta=469
10) 2x+3x+9=8(6-x)
2x+3x+9=48-8x
2x+3x+8x-48+9=0
13x-39=0
a=0 b=13 c=(-39)
delta=b²-4.a.c
delta=13²-4.0.(-39)
delta=169
11) 4(x+10)-2(x-5)=0
4x+40-2x+10=0
4x-2x+40+10=0
2x+50=0
a=0 b=2 c=50
delta=b²-4.a.c
delta=2²-4.0.50
delta=4
12) 3(2x+3)-4(x-1)=3
6x+9-4x+4-3=0
6x-4x+9+4-3=0
2x+10=0
a=0 b=2 c=10
delta=b²-4.a.c
delta=2²-4.0.10
delta=4
13) 13+4(2x-1)=5(x+2)
13+8x-4=5x+10
8x-5x-10+13-4=0
3x-1=0
a=0 b=3 c=(-1)
delta=b²-4.a.c
delta=3²-4.0.(-1)
delta=9
14) 4(x+5)+3(x+5)=21
4x+20+3x+15-21=0
4x+3x+20+15-21=0
7x+14=0
a=0 b=7 c=14
delta=b²-4.a.c
delta=7²-4.0.14
delta=49
15) 2(x+5)-3(5-x)=10
2x+10-15+3x-10=0
2x+3x+10-15-10=0
5x-15=0
a=0 b=5 c=(-15)
delta=b²-4.a.c
delta=5²-4.0.(-15)
delta=25
Perguntas interessantes
Inglês,
10 meses atrás
Inglês,
10 meses atrás
Artes,
10 meses atrás
Física,
1 ano atrás
Português,
1 ano atrás
Matemática,
1 ano atrás
Física,
1 ano atrás
Administração,
1 ano atrás