c=1+2+4+8+64

=79

\(C=2^0+2^1+2^2+2^3+2^0+2^1+2^2+2^3\)

\(=\left(2^0.2\right)+\left(2^1.2\right)+\left(2^2.2\right)+\left(2^3.2\right)\)

\(=2+4+8+16\)

\(=\left(2+8\right)+\left(4+16\right)\)

\(=10+20\)

\(=30\)

\(D=\left(2^0+2^1+2^2+2^3\right).2^0.2^1.2^2.2^3\)

\(=\left(1+2+4+8\right).1.2.4.8\)

\(=\left(8+2+4+1\right).1.2.4.8\)

\(=\left(10+4+1\right).1.2.4.8\)

\(=15.1.2.4.8\)

\(=\left(15.2\right).1.4.8\)

\(=30.1.4.8\)

\(=120.8\)

\(=960\)

đáp số bằng 0

Có a+3b=35−3.0,2=0

⇒a+3b=35−3.0,2=0

⇒ tích trên bằng 0

nhớ tick nhé

c: \(=\dfrac{3}{2}\cdot1-1-20=\dfrac{3}{2}-21=\dfrac{-39}{2}\)

b: \(=2^5-1-9+21=53-10=43\)

c: \(=\dfrac{3}{2}-1-21=\dfrac{3}{2}-21=\dfrac{-39}{2}\)

c: \(=\dfrac{3}{2}-21=\dfrac{-39}{2}\)

a) 21x7²-11x7²+90x7²+49x125x16

= 21 x 49 - 11 x 49 + 90 x 49 + 49 x 125 x 16

= 49 x ( 21 - 11 + 90 + 125 x 16 )

= 49 x ( 21 - 11 + 90 + 2000 )

= 49 x 2100

= ( 50 - 1 ) x 2100

= 50 x 2100 - 2100

= 105 000 - 2100

= 102 900

b) (2²+2¹+2²+2³) . 2⁰.2¹.2².2³

= ( 4 + 2 + 4 + 8 ) . 1 . 2 . 4 . 8

= 18 . 8 . 8

= 144 . 8

= 1152

\(a)21\times7^2-11\times7^2+90\times7^2+49\times125\times16=21\times7^2-11\times7^2+90\times7^2+7^2\times125\times16=7^2\times\left(21-11+90+125\times16\right)=7^2\times2100=102900\)

\(\left(2^2+2^1+2^2+2^3\right)\times2^0\times2^1\times2^2\times2^3=\left(2^2\times2^0\right)+\left(2^1\times2^1\right)+\left(2^2\times2^2\right)+\left(2^3\times2^3\right)=4+\left(2^1\right)^2+\left(2^2\right)^2+\left(2^3\right)^3=4+2^2+2^4+2^9=4+4+16+512=536\)