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Bài 1:
a) \(4^8\cdot2^{20}=\left(2^2\right)^8\cdot2^{20}=2^{36}\)
\(64^3\cdot4^5=\left(2^6\right)^3\cdot\left(2^2\right)^5=2^{18}\cdot2^{10}=2^{28}\)
\(y\cdot y^7=y^{1+7}=y^8\)
\(a^n\cdot a^2=a^{n+2}\)
Bài 1:
b) \(10^8:2^8=5^8\)
\(17^8:17^5=17^3\)
\(2^{25}:32^4=2^{25}:2^{20}=2^5\)
\(19^4:9^4=\left(\dfrac{19}{9}\right)^4\)
a) \(...=10^5.10^2.10^2=10^9\)
b) \(...=\left(2^2.3\right).\left(2^2.3\right).\left(2^2.3\right).2.3=2^7.3^4\)
c) \(...=5^2.5.2^2.2.2.5=2^4.5^4\)
d) \(...=7.3.2.5.2.5.3.5.2.5=2^33^2.5^4.7\)
a/
\(100000.100.10.10=10^5.10^2.10.10=10^9=2^9.5^9\)
b/
\(12.12.12.6=2^2.3.2^2.3.2^2.3.2.3=2^7.3^4\)
c/
\(25.5.4.2.10=5^2.5.2^2.2.2.5=2^4.5^4\)
d/
\(210.10.3.5.10=21.10.10.3.5.10=3.7.2.5.2.5.3.5.2.5=2^3.3^2.5^4.7\)
a: \(3\cdot3\cdot3\cdot3\cdot3=3^5\)
b: \(y\cdot y\cdot y\cdot y=y^4\)
c: \(5\cdot p\cdot5\cdot p\cdot2\cdot q\cdot4\cdot q=25\cdot2\cdot4\cdot p^2q^2=2\cdot\left(10qp\right)^2\)
d: \(a\cdot a+b\cdot b+c\cdot c+d\cdot d\cdot d\cdot d=a^2+b^2+c^2+d^4\)
\(5.p.p.5.p^2.q.4.q=\left(5.5.4\right).\left(p.p.p^2\right).\left(q.q\right)=100p^4.q^2\)
a: \(A=2\cdot2^2\cdot...\cdot2^{10}\)
=>\(A=2^{1+2+...+10}\)
=>\(A=2^{55}\)
b: \(B=3\cdot3^3\cdot3^5\cdot...\cdot3^{99}\)
\(=3^{1+3+5+...+99}\)
\(=3^{50^2}=3^{2500}\)
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