\(\left(-95\right)+2\times\left(42-37\right)^2+\left(2018\times2019\right)^0\\ =-95+2\times5^2+1\\ =-94+2\times25\\ =-94+50=-44\)
Chứng minh rằng :
a) 2x + 2y / x + y = 2 ( x + y khác 0 )
b) 2018 / 2019 = 2018 . 2018 . 2018 / 2019 . 2019 . 2019
giúp mk nha mn . ai nhanh mk tick !!!
a, (x+3)(x+5)=0
b, (x-1)5-1=0
c,(x-2018) ^x+2019=1
(x-5)^3-(x-5)^2=0
E = 3^2020 - 3^2019 + 3^2018-......+3^2 - 3
tìm x thuộc Z biết: x+(x+1)+(x+2)+...+2018+2019=0
a) ( x + 1) + ( x + 3) + ( x + 5 ) + …+ ( x + 99) = 0;
b) ( x – 3) + ( x - 2) + ( x – 1 ) + …+ 10 + 11 = 11;
c) x x x 1 2 ... 2018 2019 2019 ;
a) [58+(-42)] -(58-42)
b) (65-35)-(35+27)
c) 3.5^2-176:2^3
d) 2^2.3-5.2^3
g)2020-[39-(5-1)^2]-2019
k) 2018:[38-(7-1)^2]+2018^0
Tìm x thuộc Z,biết
A)4.(x mũ 2 +1)=0
B) - 2018.(x + 2019)= 0 mũ 2020
Tìm x biết
a)x/2+x/3+x/4+x/5=0
b)x+1/2019 + x+2/2018 = x+3/2017 + x+4/2016
x +(x+1) + ( x+2)+...+2018+2019=2019
x+(x+1)+(x+2)+....+2018+2019=2019
