a) \(2^5\cdot2^7\)

\(=2^{5+7}\)

\(=2^{12}\)

b) \(2^3\cdot2^2\)

\(=2^{3+2}\)

\(=2^5\)

c) \(2^4\cdot2^3\cdot2^5\)

\(=2^{4+3+5}\)

\(=2^{12}\)

d) \(2^2\cdot2^4\cdot2^6\cdot2\)

\(=2^{2+4+6+1}\)

\(=2^{13}\)

e) \(2\cdot2^3\cdot2^7\cdot2^4\)

\(=2^{1+3+7+4}\)

\(=2^{15}\)

f) \(3^8\cdot3^7\)

\(=3^{8+7}\)

\(=3^{15}\)

g) \(3^2\cdot3\)

\(=3^{2+1}\)

\(=3^3\)

h) \(3^4\cdot3^2\cdot3\)

\(=3^{4+2+1}\)

\(=3^7\)

I) \(3\cdot3^5\cdot3^4\cdot3^2\)

\(=3^{1+5+4+2}\)

\(=3^{12}\)

=(17-15)(17+15)=2.32=64=8²

\(17^2-15^2\\ =289-225\\ =64\)

\(4^3-3^2+5^2 =64-9+25\\ =80\)

a) \({3.3^3} = 3.(3.3.3)= 3.3.3.3={3^4}\)

b) \({2^2}{.2^4}=(2.2).(2.2.2.2) =2.2.2.2.2.2= {2^6}\)

Trả lời

1.Viết tích ... lũy thừa.

3.3.5.5.5.5=3².5⁴

2.Tính giá trị lũy thừa

2³=8

2^4=16

2^5=32

2^6=64

2^7=128

2^8=256

2^9=512

2^10=1024

1) \(3.3.5.5.5.5=3^2.5^4\)

2) tính 

\(2^3=8\)

\(2^4=16\)

\(2^5=32\)

\(2^6=64\)

\(2^7=128\)

\(2^8=256\)

\(2^9=512\)

\(2^{10}=1024\)

\(2^2.5^2=4.25=100\)

\(2^{10}.15=1024.15=15360\)

  2².5²

=2.2.5.5

=2.5.2.5

=10.10

=10²

còn lại bn tự làm nha

Bài 3:

\(B=\frac{2x^3-4x^2+2x}{3x^2-3x}\)

\(=\frac{2x\left(x^2-2x+1\right)}{3x\left(x-1\right)}=\frac23\cdot\frac{\left(x-1\right)^2}{x-1}=\frac23\left(x-1\right)\)

Bài 2:

a: \(3x^2\left(x-1\right)=3x^2\cdot x-3x^2\cdot1=3x^3-3x^2\)

b: \(\left(2x+3\right)^2-4\left(x-3\right)\left(x+3\right)\)

\(=4x^2+12x+9-4\left(x^2-9\right)\)

\(=4x^2+12x+9-4x^2+36=12x+45\)

Bài 1:

(a-b)(5x+3)+2(a-b)

=(a-b)(5x+3+2)

=(a-b)(5x+5)

=5(x+1)(a-b)

(3.5)^2-(16x2)^2=3^2x5^2-16^2x2^2=9x25-256x4=225-1024=-799

(39.42-37.42):42=[42.(39-37)]:42=42x2:42=1x2=2

2448:[190-(23-6)]=2448:[190-17)=2448:173=2448/173 nha Dương Ngọc Phuong Linh

\(a.3.5^2-16.2^2=3.25-16.4=75-64=11\)

\(b.\left(39.42-37.42\right):42=\left(39-37\right).42:42=2.1=2\)

\(c.2448:\left[190-\left(23-6\right)\right]=2448:\left(190-17\right)=2448:173=\frac{2448}{173}\)

\(2^3x2^2x2^4=2^9\)nha bạn

2³

2²

2⁴

xong rồi đó bạn nhớ kb với mk nha!