Toán Lớp 6: So sánh
A=5^100+2 phần 5^90+2
B=5^89+1 phần 5^90+1
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Toán Lớp 6: So sánh
A=5^100+2 phần 5^90+2
B=5^89+1 phần 5^90+1
Comments ( 2 )
$A=\dfrac{5^{100}+2}{5^{90}+2}=9765625$
$B= \dfrac{5^{89}+1}{5^{90}+1}=0.2$
$⇒\dfrac{5^{100}+2}{5^{90}+2}>\dfrac{5^{89}+1\:}{5^{90}+1}$
$⇒ A>B$
+)5^100+2>5^89+1
+)5^90+2>5^90+1
=)A>B