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b)\(3.4^2-2.3=3.\left(4^2-3\right)\)
\(=3.13\)
\(=39\)
Học tốt nha!!!
2A=2^2+2^3+......+2^2009+2^2010
2A-A=(2^2+2^3+......+2^2009+2^2010)-(2+2^2+2^3+...+2^2009)
A=2+2^2010
a) \(2^5:8^4=2^5:\left(2^3\right)^4=2^5:2^{12}=2^{-7}=\frac{1}{2^7}\)\(=\left(\frac{1}{2}\right)^7\)
b) \(25^6:125^3=\left(5^2\right)^6:\left(5^3\right)^3=5^{12}:5^9=5^3\)
c) \(625^2:25^7=\left(5^4\right)^2:\left(5^2\right)^7=5^8:5^{14}=5^{-6}=\frac{1}{5^6}=\left(\frac{1}{5}\right)^6\)
d) \(12^3.3^3=\left(12.3\right)^3=36^3\)
e) \(32^2:2^4=\left(2^5\right)^2:2^4=2^{10}:2^4=2^6\)
g) \(64.2:2^5=2^6.2:2^5=2^7:2^5=2^2\)
Mk làm hộ bn rùi đó nhớ ủng hộ mk nha ^_^
a) (1 phần 2 ) mũ 7
b) 5 mũ 3
c) (1 phần 5 ) mũ 6
d) 36 mũ 3
e) 2 mũ 6
g) 2 mũ 2
=( 23./x-1/+32).57=59 =(8./x-1/+9)=59:57 = 8./x-1/ +9=25 =8./x-1/=25-9 8./x-1/=16 /x-1/=16:8 /x-1/=2 x=2+1 x=3
a) \(a^2\cdot a^3\cdot a^7\cdot b^2\cdot b\)
\(=\left(a^2\cdot a^3\cdot a^7\right)\cdot\left(b^2\cdot b\right)\)
\(=a^{12}\cdot b^3\)
b) \(b^6\cdot b\cdot c^7\cdot c^8\)
\(=\left(b^6\cdot b\right)\cdot\left(c^7\cdot c^8\right)\)
\(=b^7\cdot c^{15}\)
c) \(a^8\cdot a^9\cdot a\cdot c\cdot c^{20}\)
\(=\left(a^8\cdot a^9\cdot a\right)\cdot\left(c\cdot c^{20}\right)\)
\(=a^{18}\cdot c^{21}\)
d) \(a^2\cdot a^3\cdot b^4\cdot c\cdot c^3\)
\(=\left(a^2\cdot a^3\right)\cdot b^4\cdot\left(c\cdot c^3\right)\)
\(=a^5\cdot b^4\cdot c^4\)
a) Kiểm tra lại nhé
b) \(b^6.b^7.c^8\)
\(=b^{6+7}.c^8=b^{13}.c^8\)
c) \(a^8.a^9.a.c.c^{20}\)
\(=a^{8+9+1}.c^{1+20}\)
\(=a^{18}.c^{21}\)
d) \(a^2.a^3.b^4.c.c^3\)
\(=a^{2+3}.b^4.c^{1+3}\)
\(=a^5.b^4.c^4\)
\(#WendyDang\)
\(a,12.5^2=300\)
\(b,704:8^2=704:64=11\)
\(c,2^2.2^7=2^{2+7}=2^9=512\)
\(d,\left(96:24\right)^3=4^3=64\)
12.5 mũ 2 = 300
704 : 8 mũ 2 = 11
2 mũ 2 . 2 mũ 7 = 512
(96:24) mũ 3 = 64
A)3^3. 7^7
B)4^9. 3^21
C)2^4036
D)x.x.x.x.y.y=x^4. y^2
E)a.a^3.a.a.a.b.b.b=a^7.b^3
a) 12.52 b)704:82 c) 22 . 72 d) ( 96 : 24 )3
=> 12 . 25 => 704 : 64 => 4 . 49 => 43
=> 300 => 11 => 196 => 16
~Học tốt~