a)

\(2.6^2.3.6^4\text{:}6^5\)

\(=6.6^6.6^5\)

\(=6^7:6^5\)

\(=6^2=36\)

b) \(8.2^5.16:2^{11}\)

\(=2^3.2^5.2^4:2^{11}\)

\(=2^8.2^5:2^{11}\)

\(=2^{12}:2^{11}\)

\(=2\)

c) \(\left(4^4.16\right):\left(4^3.4\right)\)

\(=\left(4^4.4^2\right):4^4\)

\(=4^6:4^4\)

\(=4^2=16\)

a) \(...=2.2^2.3^2.3.2^4.3^4:\left(2^5.3^5\right)=2^7.3^7:2^5.3^5=2^2.3^2=4.9=36\)

b) \(...=2^3.2^5.2^4:2^{11}=2^{12}:2^{11}=2\)

c) \(...=2^8.2^4:\left(2^6.2^2\right)=2^{12}:2^8=2^4=16\)

d) \(...=5.5^3.5^2:5^6=5^6:5^6=1\)

d) \(5.125.25:5^6\)

\(=5.5^3.5^2:5^6\)

\(=5^4.5^2:5^6\)

\(=5^6:5^6=1\)

a) MTC = x2 – 16 = (x + 4)(x - 4)

a) Ta có: \(6^6:6^3+4^3\cdot4^3\cdot4^2\)

\(=6^3+4^8\)

\(=216+65536=65752\)

b) Ta có: (-137)+(-129)

=-137-129

=-266

c) Ta có: -84-36

=-(84+36)

=-120

d) Ta có: \(11\cdot37+63\cdot11-49\)

\(=11\cdot\left(37+63\right)-49\)

\(=11\cdot100-49\)

\(=1100-49=1051\)

e) Ta có: \(16:2^3+4:3^3-4\cdot3\)

\(=2^4:2^3+\dfrac{4}{27}-12\)

\(=2+\dfrac{4}{27}-12\)

\(=-10+\dfrac{4}{27}=\dfrac{-270}{27}+\dfrac{4}{27}=\dfrac{-266}{27}\)

=(18+2)+(16+4)+(14+6)+(12+8)+10

=20+20+20+20+10

=20x4+10

=80+10

=90

k cho tui đi mà

2+4+6+8+10+12+14+16+18

= ( 2 + 8 ) + ( 4 + 6 ) + ( 14 + 16 ) + ( 12 + 18 ) + 10

=    10       +      10   +     30          +     30        +10

=         90 .

= 90

nhớ k nha mấy bn

a 27 . 75 + 25 . 27 - 150

= 27 . ( 75 + 25 ) - 150

= 27 . 100 - 150

= 2700 - 150

2550