Câu hỏi của Khiêm Phạm Ngọc Gia

Question

(23 * 94 + 93 * 45) : ( 92 * 10 - 92)

Anna · Accepted Answer

$^{\left(2^3.9^4+9^3.45\right):\left(9^2.10-9^2\right)}$$=\left(2^3.9^4+9^3.9.5\right):\left[9^2.\left(10-1\right)\right]$$=\left(2^3.9^4+9^4.5\right):\left[9^2.9\right]$$=\left[9^4\left(2^3+5\right)\right]:9^3$$=9^4.13:9^3$$=9.13=117$Câu trả lời: $^{\left(2^3.9^4+9^3.45\right):\left(9^2.10-9^2\right)}$$=\left(2^3.9^4+9^3.9.5\right):\left[9^2.\left(10-1\right)\right]$$=\left(2^3.9^4+9^4.5\right):\left[9^2.9\right]$$=\left[9^4\left(2^3+5\right)\right]:9^3$$=9^4.13:9^3$$=9.13=117$

nguyen thi bao tien · Answer

$\left(2^3.9^4+9^3.45\right):\left(9^2.10-9^2\right)$$=\left(2^3.9^4+9^3.45\right):10$$=\left[2^3.\left(3^2\right)^4+\left(3^2\right)^3.3^2.5\right]:10$$=\left[2^3.3^8+3^6.3^2.5\right]:10$$=\left[2^3.3^8+3^8.5\right]:10$$=\left[3^8.\left(2^3+5\right)\right]:10$$=\left[3^8.\left(8+5\right)\right]:10$$=\left[3^8.13\right]:10$Câu trả lời: $\left(2^3.9^4+9^3.45\right):\left(9^2.10-9^2\right)$$=\left(2^3.9^4+9^3.45\right):10$$=\left[2^3.\left(3^2\right)^4+\left(3^2\right)^3.3^2.5\right]:10$$=\left[2^3.3^8+3^6.3^2.5\right]:10$$=\left[2^3.3^8+3^8.5\right]:10$$=\left[3^8.\left(2^3+5\right)\right]:10$$=\left[3^8.\left(8+5\right)\right]:10$$=\left[3^8.13\right]:10$

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