Tìm x
2.3^x = 10.3^12 + 8.27^4
Hepl me !
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
2.4^x=10.3^12 +8.27^4
tìm x nha
tìm x:
2.3^x=10.3^12+8.27^4
Tìm x biết 2.3x=10.312+8.274
Tớ không biết viết số mũ nên tớ viết ^ là mũ nhé.
2.3^x = 10.3^12 + 8. (3^3)^4
2.3^x = 10.3^12 + 8.3^12
2.3^x = 18.3^12
2.3^x = 2.9.3^12
3^x = 9.3^12
3^x = 3^2.3^12
3^x = 3^14
=> x = 14
Hơi dài dòng, bạn thông cảm nhé.
1 ) tìm x
a) (19.x +2.52):14=(13-8)2-42
b)2.3x-10.312+8.272
Please help me
a) (19.x + 2.52): 14 = 9
19.x +2.52 = 9.14 =126
19.x+ 50 =126
19.x =126-50 =76
x = 76 :19 = 4
Câu b sao ko có đáp án tìm x vậy bn
minh lam lun nha ko ghi lai de dau
a, (19x + 2.25): 14 = 5^2 - 4^2 (25-16)
( 19x + 50) = 9. 14
19x+50= 126
19x=126-50
x= 76:19
x= 4
muc b ko co kt qua lam sao ma lam
2.3^x =10.3^12 +8.27^4
2. 3^x = 10.3^12 + 8.27^4
\(2.3^x=10.3^{12}+8.27^4\)
\(2.3^x=10.3^{12}+8.3^{12}\)
\(2.3^x=3^{12}\left(10+8\right)\)
\(2.3^x=18.3^{12}\)
\(3^x=9.3^{12}\)
\(3^x=3^{14}\)
\(x=14\)
2.3^x=10.3^12+8^27^4
2.3^x=10.3^4.3+8.27^4
2.3^x=10.27^4+8.27^4
2.3^x=(10+8).27^4
2.3^x=18.27^4
2.3^x=2.9.3^12
2.3^x=2.3^2.3^12
2.3^x=2.3^14
x=14
2.3 mũ x =10.3 mũ 12 + 8.27 mũ 4
2.3x = 10.312 + 8.274
=> 2.3x = 10.312 + 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