Question

a)x2016=x2017

b)(x-5)2015=(x-5)2014

c5x+5x+2=650

d)x2017=x2

Answer 1

a) x=1 hoặc x=0

b) x=5 hoặc x=6

c) x=64,8

d) x=1 hoặc x=0

Answer 2

a) 2016x = 2017x

=> 2016x - 2017x =0

=> x(2016 - 2017) =0

=> x(-1)=0

=>x=0:(-1)=0

b) (x-5)2015=(x-5)2014

=> (x-5)2015 - (x-5)2014=0

=> (x-5)(2015-2014)=0

=> x-5=0

=>x=5

c)5x + 5x +2 =650

=> 10x + 2 =650

=> 10x =648

=> x = \(\frac{648}{10}=64,8\)

d) 2017x =2x

=> 2017x -2x =0

=> 2015x=0

=>x=0