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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: bài 5: rút gọn thành một lũy thừa 11) $x^{17}$ : $x^{12}$ (x$\neq$ 0) 12)$x^{8}$ : $x^{5}$(x$\neq$ 0) 13) $x^{4}$ : x(x$\neq$ 0) 14)

Toán Lớp 6: bài 5: rút gọn thành một lũy thừa
11) $x^{17}$ : $x^{12}$ (x$\neq$ 0)
12)$x^{8}$ : $x^{5}$(x$\neq$ 0)
13) $x^{4}$ : x(x$\neq$ 0)
14) $x^{7}$ : $x^{6}$
15) $x^{9}$ : $x^{9}$ (x$\neq$ 0)
16) $a^{12}$ : $a^{5}$ (a$\neq$ 0)
17)$a^{8}$ : $a^{6}$ (a$\neq$ 0)
18)$a^{10}$ : $a^{7}$ (a$\neq$ 0)

Comments ( 2 )

  1. 11) $x^{17}$ : $x^{12}$ =$x^{17-12}$ =$x^{5}$ ( x $\ne$0)
    12) $x^{8}$ : $x^{5}$ =$x^{8-5}$ =$x^{3}$ ( x $\ne$0)
    13) $x^{4}$ : $x^{}$ =$x^{4-1}$ =$x^{3}$ ( x $\ne$0)
    14) $x^{7}$ : $x^{6}$ =$x^{7-6}$ =$x^{}$ ( x $\ne$0)
    15) $x^{9}$ : $x^{9}$ =$x^{9-9}$ =$x^{0}$ =1( x $\ne$0)
    16) $a^{12}$ : $a^{5}$ =$a^{12-5}$ =$a^{7}$ (a $\ne$0)
    17) $a^{8}$ : $a^{6}$ =$a^{8-6}$ =$a^{2}$ ( a $\ne$0)
    18) $a^{10}$ : $a^{7}$ =$a^{10-7}$ =$a^{3}$ ( a $\ne$0)
     

  2. 11) x^17 ÷ x^12 = x^(17 – 12) = x^5 (xne0)
    12) x^8 ÷ x^5 = x^(8 – 5) = x^3(xne0)
    13) x^4 ÷ x = x^(4-1) = x^3(xne0)
    14) x^7 ÷ x^6 = x^(7-1) = x(xne0)
    15) x^9 ÷ x^9 = x^(9-9) = x^0 = 1(xne0)
    16) a^12 ÷ a^5 = a^(12 – 5) = a^7(ane0)
    17) a^8 ÷ a^6 = a^(8-6) = a^2(ane0)
    18) a^10 ÷ a^7 = a^(10-7) = a^3(ane0)

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222-9+11+12:2*14+14 = ? ( )

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