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\(\dfrac{121.75.130.169}{39.60.11.198}=\dfrac{11^2.3.5^2.2.5.13.13^2}{3.13.2^2.3.5.11.2.3^2.11}=\dfrac{2.3.5^3.11^2.13^3}{2^3.3^4.5.11^2.13}=\dfrac{5^2.13^2}{2^2.3^3}=\dfrac{4225}{108}\)
=\(\dfrac{121.75.130.169}{39.60.11.198}\)
=\(\dfrac{25.65.13.13}{13.30.18}\)
=\(\dfrac{5.5.65.13.13}{13.6.5.18}\)
=\(\dfrac{5.65.13}{6.18}\)
=\(\dfrac{65.65}{108}\)
=\(\dfrac{4225}{108}\)
Chúc bạn học tốt !
\(\left(1\right)\frac{121.75.130.169}{39.60.11.198}\)
\(=\frac{121.15.5.13.10.13.13}{13.3.15.4.11.18.11}\)
\(=\frac{121.5.13^2.10}{3.4.18.121}\)
\(=\frac{50.196}{12.18}\)
\(=\frac{9800}{216}=\frac{1225}{27}\)
\(\left(2\right)\frac{135.350+135.550}{900.100+35.900}\)
\(=\frac{135.\left(350+550\right)}{900.\left(100+35\right)}\)
\(=\frac{135.900}{900.135}=1\)
HOK TOT
1)=11^2.15.5.13.10.169/13.3.15.4.11.198
=5.10.169/3.4.18
=8450/216=4225/108
2)=135.(350+550)/900.(100+35)
=135.900/900.135=1
Trả lời:
\(\frac{121.75.130.169}{39.60.11.198}=\frac{11.11.15.5.65.2.13.13}{13.3.15.4.11.99.2}=\frac{11.5.65.13}{3.4.99}=\frac{4225}{108}\)
hok tốt!!
^^
= 11×11×15×5×39×3×2×65
39×15×2×2×11×3×6×11
= 5×65
2×6
= 325
12
Học tốt~♡
\(\frac{121.75.130.169}{39.60.11.198}=\frac{11.11.3.25.10.13.13.13}{13.3.2.3.10.11.18.11}=\)\(\frac{25.169}{6.18}=\frac{4225}{108}\)
Tự chép đề bài nhé
=\(\frac{11.11.25.3.65.2.169}{3.13.2.30.11.18.11}\)
=\(\frac{25.65.13.13}{13.30.18}\)
=\(\frac{5.5.65.13.13}{13.6.5.18}\)
=\(\frac{5.65.13}{6.18}\)
=\(\frac{65.65}{108}\)
tự tính tiếp
\(\frac{121.75.130.169}{39.60.11.198} \)= \(\frac{11^2.5^2.3.13.5.2.13^2}{3.13.2^2.3.5.11.2.3^2}\)
= \(\frac{11.5^2.13^2}{2^2.3^3}\)
\(\frac{121\cdot75\cdot130\cdot169}{39\cdot60\cdot11\cdot198}=\frac{11^2\cdot3\cdot5^2\cdot13\cdot2\cdot5\cdot13^2}{13\cdot3\cdot2^2\cdot3\cdot5\cdot11\cdot2\cdot11\cdot3^2}\)
\(=\frac{11^2\cdot3\cdot5^3\cdot13^3\cdot2}{13\cdot3^4\cdot2^3\cdot5\cdot11^2}=\frac{13\cdot5^2}{3^3\cdot2^2}=\frac{325}{36}\)
P/S:Không bt có đúng ko nx nhưng hướng làm là như vậy
cảm ơn