5^12*7-5^11*10

=5^12*7-5^11*(5.2)

=5^12*7-5^12*2

=5^12*(7-2)

=5^12*5

=5^13

\(5^{12}.7-5^{11}.10=5^{11}.\left(5.7-10\right)=5^{11}.25=5^{11}.5^2=5^{13}\)

= 5¹¹.(5.7-10)=5¹¹.25=5¹³

\(5^{11}\left(5\cdot7-10\right)=5^{11}\left(35-10\right)=5^{11}\cdot5^2=5^{13}\)

\(5^{12}\cdot7-5^{11}\cdot10\)

\(=5^{11}\cdot\left(5\cdot7-10\right)\)

\(=5^{11}\cdot5^2=5^{13}\)

a) 4.9.16=2.2.3.3.4.4=2.2.3.3.2.2.2.2=2⁶.3²

b)4.6.9.15.25=2.2.3.2.3.3.3.5.5.5=2³.3⁴.5³=10³.3⁴

a, 4⁸.8⁴

= (2²)⁸.(2³)⁴

= 2¹⁶.2¹²

= 2²⁸

b, 4¹⁵.5¹⁵

= (4.5)¹⁵

= 20¹⁵

c, 2¹⁰.15 + 2¹⁰.85

= 2¹⁰.(15 + 85)

= 2¹⁰.100

=2¹⁰.(2.5)²

= 2¹².5²

d, 3³.9²

= 3³ . (3²)²

= 3³.3⁴

= 3⁷

e, 5¹².7 - 5¹¹.10

= 5¹¹.(5.7 - 10)

= 5¹¹.25

=5¹¹.5²

=5¹³

f, \(x^1\).\(x^2\).\(x^3\)....\(x^{100}\)

= \(x^{1+2+3+...+100}\)

= \(x^{\left(1+100\right).100:2}\)

= \(x^{5050}\)

❤Em cảm ơn cô Nguyễn Thương hoài rất nhiều a!❤

a, 48.84

= (22)8.(23)4

= 216.212

= 228

b, 415.515

= (4.5)15

= 2015

c, 210.15 + 210.85

= 210.(15 + 85)

= 210.100

=210.(2.5)2

= 212.52

d, 33.92

= 33 . (32)2

= 33.34

= 37

e, 512.7 - 511.10

= 511.(5.7 - 10)

= 511.25

=511.52

=513

f, �1x1.�2x2.�3x3....�100x100

= �1+2+3+...+100x1+2+3+...+100

= �(1+100).100:2x(1+100).100:2

= �5050x5050

a) 2² . 3² . 4²

b) 2² . 6 . 3² . 15 . 5²

cảm ơn dù ko bt đúng sai

a, 4.9.16 = 2².3².4² = 24²

b, 4.6.9.15.25 = 2².2.3.3².3.5.5² = 2³.3⁴.5³ = 3.30³

 a)3³ . 9²

= 3³ . 3⁴

=3³⁺⁴

=3⁷

b) 5¹².7-5¹¹.10 

= 5¹².7 - 5¹².2

= 5¹².(7-2)

= 5¹².5

=5¹³

c) x¹.x².x³...x¹⁰⁰

= x^{(100+1).100:2}

= x⁵⁰⁵⁰

3³ . 9² = 3³ . (3 . 3)² = 3³ . 3² . 3² = 3⁷

what happened?

=10.2>8=20>8

Đáp án là A