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C. 676 - 576 √100 = 10

😮3x=6=>x=2ans

0,01•0,04= 0,0004%

√15^2-✓9^2 /2= ✓(15-9)(15+9) /2= ✓6•24 / 2= ✓3•24= ✓6•6•2= 6✓2.

(0.09)^1/2=(9/100)^1/2=3/10=0.3ans

Why not ? √-1 x √ -1 = √ -1 x -1 = √ 1 and = 1

=>(26+24)×2}^0.5=100^1/2=10 ans.

(2^2)^2 × (2^3)^4 2^4 × 2^12 = 2^(4 + 12) = 2^16 2^(16/4) = 2^4 = 16

x^(1/2) / x = 3 => 1 / x^(1/2) = 3 => x^(1/2) = 1/3 => x = 1/9

let a=5^x.=>a^2-30a+125=0=>a^2-2.a.15+125+100=100=>(a-15)^2=10^2=>a-15=10=>a=25=>5^x=5^2=>x=2ans

Letra C

but who told yu that x without root is positive , because i think should the two sides of the equation should be positive to power up them

(2^3)^x + (2^3)^x = 128 2(2^3x) =128 , 2^(3x + 1) = 2^7 3x + 1 = 7 , 3x = 7 - 1 = 6 x = 6/3 = 2

B. (2^2)^x = (2^2)^4 + (2^2)^4 2^2x = 2^8 + 2^8 = 2(2^8) = 2^9 2x = 9 , x = 9/2 = 4.5

√(4 × 5) + √(9 × 5) = 2 × √5 + 3 × √5 = 5 × √5 , answer is A

8^x+8^x= 128; 2^3x+2^3x = 2^6; 2×3xlg2= 5lg2×2. 3x= 5, x=5/3.

0.02

devided by 0 is undefined ; how x can b a zero?

x=1/9

d

Letra B

(50^50)/((5^2)^25) (50^50)/(5^(2•25)) (50^50)/(5^50) (50/5)^50 10^50

Letra B

x=9/2ans

Maybe for younger people but log is much simpler since only one calculation need

4/(4^2•8^4 ; 4/(2^2)^2•(2^3)^4) ; 4/(2^4+^12 ; 4/(2^16) ; (2^16)•1/4 =2^4=16

2^2х= 2•2^8, 2^2х= 2^9; 2хlg2= 9 lg2 | lg2 , х = 9/2.

3/10=0.3

✓х/х= 3; х не рав😊но 0; 😊😊✓х/х= 3; 😊(✓х/х)^2= 3^2; х/х^2= 9; 1/х= 9, 1= 9х, х= 1/9 .

✓0,09😊= ✓9/100 = 3😊/10.

You took the log too early... 2 . 5^x = 90 -> 5^x = 45 = 9 . 5^1 -> 5^x . 5^-1 = 9 -> 5^(x - 1) = 9 and now it is time for the logs (x - 1) . log 5 = log 9 -> x = (log 9 / log 5) + 1 ~ 2.37 not 2.36 😃

?=-48

Letra B

Super

Answer 80 percent d is the correct option .

MARE BRÂNZĂ!

A. 1/4

0.5 is half , 1 ÷ 0.5 = 2 2 ÷ 0.5 = 4 , 4 ÷ 0.5 = 8 . 0.5^-3 is 8 (0.5^-3)^x = 0.5 , 0.5^(-3x) = 0.5 -3x = 1 , answer is A So x = 1/-3 or -1/3 😊 as you like .

Класс!

3^x+3^x=162 ; 3^x=162/2 ; 3^x=81 ; 3^x=(9)^2 ; 3^x=(3^2)^2 ; 3^x=3^4 ; X=4

?=(4/100)^1/2=2/10=20%ans

D

=/0.2•0.2 =(/0.2^2)=0.2

😂🤣😂🤣😂🙃

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Какой то гон. Реально по -русски x=0.5 /8 и вся канитель ваша не нужна.

A. √(x + 1) = 1 x + 1 = 1 x = 1 - 1 = 0

Mksh ilmunya ka

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