Question

tính kết quả mỗi phép tính sau dưới dạng một lũy thừa a) 3⁶ . 3⁷ b) 5 . 5⁴ . 5² . 5⁵ c) a⁴ . a⁵ . a¹⁰ d) x¹⁰ . x⁴ . x e) 3.3.3.9 f) a².a.a.a.a.a.a

Answer 1

\(a,3^6\cdot3^7=3^{6+7}=3^{13}\)

\(b,5\cdot5^4\cdot5^2\cdot5^5=5^{1+4+2+5}=5^{12}\)

\(c,a^4\cdot a^5\cdot a^{10}=a^{4+5+10}=a^{19}\)

\(d,x^{10}\cdot x^4\cdot x=x^{10+4+1}=x^{15}\)

\(e,3\cdot3\cdot3\cdot9=3^3\cdot3^2=3^5\)

\(f,a^2\cdot a\cdot a\cdot a\cdot a\cdot a\cdot a=a^{2+1+1+1+1+1+1}=a^8\)

Answer 2

a: 3^6*3^7=3^13

b: \(=5^{1+4+2+5}=5^{11}\)

c: \(=a^{4+5+10}=a^{19}\)

d: \(=x^{10+4+1}=x^{15}\)

e: \(=3^3\cdot3^2=3^5\)

f: \(=a^2\cdot a^6=a^8\)