\(\left(\frac{1-1}{49}\right).\left(\frac{1-1}{64}\right).\left(\frac{1-1}{81}\right).\left(\frac{1-1}{100}\right).\left(\frac{1-1}{121}\right).\left(\frac{1-1}{144}\right)\)
= \(\frac{0}{49}.\frac{0}{64}.\frac{0}{81}.\frac{0}{100}.\frac{0}{121}.\frac{0}{144}\)
= 0 . 0 . 0 . 0 . 0 . 0 = 0
Bạn ơi, mình lộn đề rồi. Sorry !!!!!!!!
\(\left(1-\frac{1}{49}\right).\left(1-\frac{1}{64}\right).\left(1-\frac{1}{81}\right).\left(1-\frac{1}{100}\right).\left(1-\frac{1}{121}\right).\left(1-\frac{1}{144}\right)\)
= \(\frac{48}{49}.\frac{63}{64}.\frac{80}{81}.\frac{99}{100}.\frac{120}{121}.\frac{143}{144}\)
= \(\frac{13}{14}\)
Bạn rút gọn là ra à. Bài của mình nó hơn tắt.
