\(2^x+2^{x-1}+2^{x-2}=2^{x-2}.2^2+2^{x-2}.2+2^{x-2}\)\(=2^{x-2}\left(4+2+1\right)=2^{x-2}.7\)
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\(2^x+2^{x-1}+2^{x-2}=2^{x-2}.2^2+2^{x-2}.2+2^{x-2}\)\(=2^{x-2}\left(4+2+1\right)=2^{x-2}.7\)
thank you
5^x 2=1 help me please
(4^2).x-(3^2).x=49
Help me, please
5^x+2 - 5^x= 3.10^3 Please help me
1 + 2 + 3 + ..... + x = 150
please, help me!!!!!!!!
a) 3(-2x+1)-2020° = -2(2-x)-3.
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Tìm x
4× (x+3)= 2 ×(x+1)+20
Help me please nhanh, đúng thì tick nha
| -2/3 x + 0,4 | . 5/3 - 3/2= 1/6
help me please T o T
2 x 20 x 200 x ... x 20000000000 = ?
Help me to do it, please!!!!!
\(\dfrac{1}{5}\).\(\left(x+\dfrac{1}{5}\right)\)\(+\)\(\dfrac{2}{5}\)\(\left(x+\dfrac{5}{3}\right)\)\(=\)\(\dfrac{98}{75}\)
help me please :D