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7.7.7 = 7^3
7.35.7.25 = 7^2*35^2
2.3.8.12.24=2*3*2*2*2*3*2*2*2*2*2*3 = 2^9*3^3
x.x.y.y.x.y.x = x^3*y^3
\(7\cdot35\cdot7\cdot25=7^2\cdot7\cdot5\cdot5^2=7^3\cdot5^3\)
\(2\cdot3\cdot8\cdot12\cdot24=2\cdot3\cdot2^3\cdot2^2\cdot3\cdot2^3\cdot3=2^9\cdot3^3\)
\(25\cdot5\cdot4\cdot2\cdot10=5^2\cdot5\cdot2^2\cdot2\cdot5\cdot2=5^4\cdot2^4\)
\(x\cdot x\cdot y\cdot y\cdot x\cdot y\cdot x=x^4\cdot y^3\)
\(7.35.7.25=7.7.5.7.5^2=7^3.5^3=\left(7.5\right)^3=35^3\\ 2.3.8.12.24=2.3.2^3.2^2.3.2^3.3=2^9.3^3\\ 25.5.4.2.10=5^2.5.2.2.2.2.5=5^4.2^4=\left(5.2\right)^4=10^4\\ x.x.y.y.x.y.x=x^4.y^3\)
a, 2.2.10.10.5 = 2.(2.5).10.10 = 2.10.10.10 = 2.10^3
b, 3.5.27.125 = 3.5.3^3.5^3 = 3^4.5^4
c, 2.3.12.12.3 = 2.3.3.2^2.3.2^2.3 = 2^5.3^4
d, 2.3.8.12.24 = 2.3.2^3.3.2^2.2^3.3 = 2^9.3^3
A)2.2.10.10.5=2.(2.5).10.10
=2.10.10.10=21.103
B) 3.5.27.125=3.5.(9.3).(25.5)
=3.5.3.3.3.5.5.5=3.3.3.3.5.5.5.5=34.54
C) 2.3.12.12.3=2.3.(4.3).(4.3).3
=2.3.2.2.3.2.2.3.3=2.2.2.2.2.3.3.3.3=25.34
Đ)2.3.8.12.24=2.3.(2.2).(3.4).(6.2)
=2.3.2.2.3.2.2.3.2.2=27.33
a ) 7.7.7.7 = 74
b ) 2.3.8.12.24 = 2. 3 . 23 . 22 . 3 . 23 . 3
c ) 7.35.7.35 = 74 . 52
d ) x.x.x.y.y.y.x.y = x4 . y4
b1
a.7^3
b.7^3*5^3
c.2^5*3^3*4^2
dx^3 *y^3
mình nha mình làm b1 thui
a) 7.7.7 = 73
b) 7.35.7.25 = 53 x 73
c) 2.3.8.12.24 = 29 x 33
d) x.x.y.y.x.y.x = x4 . y3
Bài 2:Viết kết quả dưới dạng lũy thừa.
a) 35 : 37 = 3-2
b) 125 : 53 = 11
c) 75 : 343 = 72
d) a12 : a8 = a4
\(8-12x+6x^2-x^3\)
\(=\left(2-x\right)^3\)
\(125x^3-75x^2+15x-1\)
\(=\left(5x-1\right)^3\)
\(x^2-xz-9y^2+3yz\)
\(=\left(x-3y\right)\left(x+3y\right)-z\left(x-3y\right)\)
\(=\left(x-3y\right)\left(x+3y-z\right)\)
\(x^3-x^2-5x+125\)
\(=\left(x+5\right)\left(x^2-5x+25\right)-x\left(x+5\right)\)
\(=\left(x+5\right)\left(x^2-5x+25-x\right)\)
\(=\left(x+5\right)\left(x^2-6x+25\right)\)
\(x^3+2x^2-6x-27\)
\(=x^3+5x^2+9x-3x^2-15x-27\)
\(=x\left(x^2+5x+9\right)-3\left(x^2+5x+9\right)\)
\(=\left(x-3\right)\left(x^2+5x+9\right)\)
\(12x^3+4x^2-27x-9\)
\(=4x^2\left(3x+1\right)-9\left(3x+1\right)\)
\(=\left(3x+1\right)\left(4x^2-9\right)\)
\(=\left(3x+1\right)\left(2x-3\right)\left(2x+3\right)\)
\(4x^4+4x^3-x^2-x\)
\(=4x^3\left(x+1\right)-x\left(x+1\right)\)
\(=x\left(x+1\right)\left(4x^2-1\right)\)
\(=x\left(x+1\right)\left(2x-1\right)\left(2x+1\right)\)
a, Không có số liệu để tìm x
b, x ϵ {1;2;3}
c, Không có x
=13824 nhé~~~~
Trả lời :
= 13824
~ HT ~