300 - 2 * ( 2 * x - 24 ) =180
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
`a)2^{300}=(2^3)^100=8^100`
`3^200=(3^2)^100=9^100`
Vì `9^100>8^100`
`=>2^300<3^200`
`b)3xx24^10`
`=3.(3.8)^10`
`=3^{11}.8^10`
`=3^{11}.2^30`
`2^300=2^{30}.2^{270}`
`=2^{30}.8^{90}`
Vì `3^11<8^90`
`=>3^{11}.2^30<8^{90}.2^30=2^300`
`=>3xx24^{10}<2^300+3^20+4^30`
30x+60+6x-30-24=180
36x+6=180
36x=174
x=\(\frac{29}{6}\)
nhớ tích đúng cho mình nha
\(180:\left\{300:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\\ =180:\left\{300:\left[450-\left(4.125-4.25\right)\right]\right\}\\ =180:\left\{300:\left[450-\left(500-100\right)\right]\right\}\\ =180:\left\{300:\left[450-400\right]\right\}\\ =180:\left\{300:50\right\}\\ =180:6\\ =30\)
\(180:\left\{300:\left[450-\left(4.5^3-2^2.25\right)\right]\right\}\\ =180:\left\{300:\left[450-\left(4.125-4.25\right)\right]\right\}\\ =180:\left\{300:\left[450-\left(4.100\right)\right]\right\}\\ =180:\left\{300:\left[450-400\right]\right\}\\ =180:\left\{300:50\right\}\\ =180:6\\ =30\)
180 : { 300 : [ 450 - ( 4 . 53 - 22 . 25 )]}
= 180 : { 300 : [ 450 - ( 4 . 125 - 4 . 25 )]}
= 180 : { 300 : [ 450 - ( 500 - 100 )]}
= 180 : { 300 : 50 }
= 180 : 6
= 30
180: ( 300: ( 450 - (4 x 53 - 22x 25)))
=180: ( 300: ( 450 - ( 500 - 100 )))
=180: ( 300: ( 450 - 400 ))
=180: ( 300: 50)
=180: 6 = 30a,
36 x 40 = (36 x 4) x 10 = 144 x 10 = 1 440
72 x 60 = (72 x 6) x 10 = 432 x 10 = 4 320
89 x 50 = (89 x 5) x 10 = 445 x 10 = 4 450
b,
450 x 70 = (45 x 7) x 100 = 315 x 100 = 31 500
2300 x 500 = (23 x 5) x 10 000 = 115 x 10 000 = 1 150 000
17 000 x 30 = (17 x 3) x 10 000 = 510 000
300-2*(2*x-24)=180
2*(2*x-24)=300-180
2*(2*x-24)=120
2*x-24=120:2
2*x-24=60
2*x=60+24
2*x=84
x=84:2
x=42
300 - 2*( 2*x - 24) = 180 => 300 -180 = 2*(2*x -24) => 120 = 4*x - 2 * 24 => 120 = 4 *x - 48 => 4*x = 120 + 48 => 4*x = 168 => x= 168 / 4 => x = 42
vậy x=42