a) x^10 = 1^x
b) 2.3^x =10.3^12+8.27^4
c) x^10=x
Tim x
a) 10^x=1^x
B)X^10=x
c) x^10=1^x
d)2.3^x=10.3^12+8.27^4
e) (19x+2.5^2):14=(13-8)^2-4^2
10^X=1^X
Do 1^mấy cũng =1
=>10^x=1
=>x=0
tìm x 2.3^x=10.3^12+8.27^4
\(2.3^x=10\cdot3^{12}+8.27^4\)
\(10.3^{12}+8.27^4=10.3^{12}+8.3^{12}\)
\(10.3^{12}+8.3^{12}=3^{12}\cdot\left(10+8\right)=3^{12}\cdot18=3^{12}\cdot2\cdot3^2=3^{14}\cdot2\)
=>x = 14
tìm x
2.3^x = 10.3^12+8.27^4
<=>2.3x=9565938 tính ra số hơi to ^^
=>3x2=2.4782696 ( 2 vế rút gọn 2 )
=>3x=4782969
=>x=14
2.3^x =10.3^12 +8.27^4
2.3 mũ x =10.3 mũ 12 + 8.27 mũ 4
2.3x = 10.312 + 8.274
=> 2.3x = 10.312 + 23 . (33)4
=> 2.3x = 10.312 + 8.312
=> 2.3x = (10 + 8).312
=> 2.3x = 18.312
=> 2.3x = 2.32 . 312
=> 2.3x = 2.314
=> x = 14
\(2.3^x=10.3^{12}+8.27^4\)
\(\Leftrightarrow2.3^x=2.5.3^{12}+2^3.\left(3^3\right)^4\)
\(\Leftrightarrow2.3^x=2.5.3^{12}+2^3.3^{12}\)
\(\Leftrightarrow2.3^x=2.3^{12}\left(5+2^2\right)\)
\(\Leftrightarrow2.3^x=2.3^{12}.9\)
\(\Leftrightarrow2.3^x=2.3^{12}.3^2\)
\(\Leftrightarrow2.3^x=2.3^{14}\)
\(\Leftrightarrow x=14\)
Vậy x=14
Hok Tốt !!!!!!!!!!!!!!!!!!!!!!!
\(2\cdot3^x=10\cdot3^{12}+8\cdot27^4\)
\(2\cdot3^x=2\cdot5\cdot3^{12}+2^3\cdot\left(3^3\right)^4\)
\(2\cdot3^x=2\cdot5\cdot3^{12}+2^3\cdot3^{12}\)
\(2\cdot3^x=2\cdot3^{12}\left(5+2^2\right)\)
\(3^x=3^{12}\left(5+4\right)\)
\(3^x=3^{12}\cdot9\)
\(3^x=3^{12}\cdot3^2\)
\(3^x=3^{14}\)
x = 14
2.3 mũ x = 10.3 mũ 12 + 8.27 mũ 4
2.3x = 10.312 + 8.274
=> 2.3x = 10.312 + 8.(33)4
=> 2.3x = 10.312 + 8.312
=> 2.3x = (10 + 8).312
=> 2.3x = 18.312
=> 3x = 18 : 2.312
=> 3x = 9.312
=> 3x = 32.312
=> 3x = 314
=> x = 14
vậy_
tìm x:
2.3^x=10.3^12+8.27^4
Tìm x
2.3^x = 10.3^12 + 8.27^4
Hepl me !
\(2.3^x=10.3^{12}+8.27^4\)
\(2.3^x=10.3^{12}+8.\left(3^3\right)^4\)
\(2.3^x=10.3^{12}+8.3^{12}\)
\(2.3^x=3^{12}.18\)
\(2.3^x=3^{12}.3^2.2\)
\(2.3^x=2.3^{14}\)
\(\Rightarrow x=14\)
\(2.3^x=10.3^{12}+8.27^4\)
\(\Rightarrow 2.3^x=2.3^{12}.5+2.3^{12}.2^2\)
\(\Rightarrow 2.3^x=2.3^{12}.(5+2^2)\Rightarrow 2.3^x=2.3^{12}.9\)
\(\Rightarrow 2.3^x=2.3^{12}.3^2\Rightarrow 2.3^x=2.3^{14}\Rightarrow 3^x=3^{14}\Rightarrow x=14\)
k mk nha bạn!
Tim x , 2.3x=10.312+8.274
2.3x=10.312+8.274
=>2.3x=10.312+8.312
=>2.3x=18.312
=>2.3x=2.32.312
=>2.3x=2.314
=>3x=314
=>x=14
vậy x=14
theo ngữ văn :
nếu 10 + 8 = 18 thì ta 2.3 = 9 ta lấy 18 : 9 = 2 sau đó ta nhân 2 bằng 4
đây là cách ngữ văn không nên chép hoặc làm theo thế này