Question

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Answer 1

Respuesta:

¿En que grado estas?

Answer 2

Verified answer

Respuesta:

1. x=1/35

2. x=-1/12

3.x=4

4. x=1/5

Explicación paso a paso:

1. (4-5x)(4x-5)=(10x-3)(7-2x)

16x-20-20[tex]x^{2}[/tex]+25x=70x-20[tex]x^{2}[/tex]-21+6x

16x-20+25x=70x-21+6x

41x-20=76x-21

41x-76x=-21+20

-35x= -1

x=1/35

2. 14-(5x-1)(2x+3)=17-(10x+1)(x-6)

14-(10[tex]x^{2}[/tex]+15x-2x-3)=17-(10[tex]x^{2}[/tex]-60x+x-6)

14-(10[tex]x^{2}[/tex]+13x-3)=17-(10[tex]x^{2}[/tex]-59x-6)

14-10[tex]x^{2}[/tex]-13x+3=17-10[tex]x^{2}[/tex]+59x+6

14-13x+3=17+59x+6

17-13x=23+59x

-13x-59x=23-17

-72x=6

x=-1/12

3. [tex](x-2)^{2}[/tex]+x(x-3)=3(x+4)(x-3)-(x+2)(x-1)+2

[tex]x^{2}[/tex]-4x+4+[tex]x^{2}[/tex]-3x=(3x+12)(x-3)-([tex]x^{2}[/tex]-x+2x-2)+2

2[tex]x^{2}[/tex]-7x+4=3[tex]x^{2}[/tex]-9x+12x-36-([tex]x^{2}[/tex]-x+2x-2)+2

2[tex]x^{2}[/tex]-7x+4=3[tex]x^{2}[/tex]-9x+12x-36-[tex]x^{2}[/tex]-x+2+2

2[tex]x^{2}[/tex]-7x+4=2[tex]x^{2}[/tex]+2x-32

-7x+4=2x-32

-7x-2x=-32-4

-9x=-36

x=4

4. (3x-1[tex])^{2}[/tex]-5(x-2)-(2x+3[tex])^{2}[/tex]-(5x+2)(x-1)=0

9[tex]x^{2}[/tex]-6x+1-5x+10-(4[tex]x^{2}[/tex]+12x+9)-(5[tex]x^{2}[/tex]-5x+2x-2)=0

9[tex]x^{2}[/tex]-6x+1-5x+10-4[tex]x^{2}[/tex]-12x-9-(5[tex]x^{2}[/tex]-3x-2)=0

9[tex]x^{2}[/tex]-6x+1-5x+10-4[tex]x^{2}[/tex]-12x-9-5[tex]x^{2}[/tex]+3x+2=0

0-20x+4=0

-20x+4=0

-20x=-4

x=1/5

Espero que de algo te sirva mi respuesta c:

más tarde actualizaré con todas las respuestas :DD