Question

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Answer 1

Respuesta:

a) - 4(2x-1)+18=6-2(-5+x)

-8x+4+18=6+10-2x

-8x+22=16-2x

-8x+2x=16-22

-6x=-6

x=-6÷-6

x=1

b). 4(x-1)+10=2(x+7)

4x-4+10=2x+14

4x+6=2x+14

4x-2x=14-6

2x=8

x=8÷2

x=4

c) 2^13÷2^10=x^2÷(-4)+5(-2)^2

8192÷1024=x^2÷(-4)+5(-2)^2

8=x^2÷(-4)+5(-2)^2

8=-1/4x^2+5(-2)^2

8=-1/4x^2+5*4

8=-1/4x^2+20

32=-x^2+80

32-80=-x^2

48=x^2

$\sqrt{ 48} = x$

x1=+6,9282 x2=-6,9282