task/29843323
11. [ (1/16) ^(-0,75) +27^(2/3) -25 ^(0,5) ] / [ 4^ (0,7) *2^(-0,4) ]
* * * = [ (2⁻⁴) ^ (-3/4) +(3³)^(2/3) - (5²) ^ (0,5) ] / [ (2²)^(0,7) *2^(-0,4) ] =
[ 2^ (-4)*(-3/4) +3 ^(3*2/3) -5^(2*0,5) ] / [ 2^(2*0,7) *2 ^(-0,4) ] * * *
= (2³ +3² - 5) / [ 2^(1,4) *2 ^(-0,4) ] = 12 / [ 2^(1,4 -0,4) ] =12 / 2¹ = 6.
ответ: 6 .
10. [ ( x ^ 0,5 + 3) / ( x ^ 0,5 - 3) + ( x ^ 0,5 -3) /(x ^ 0,5 + 3) -36/ (x -9) ] ³ =
[ ( (√ x + 3 )² + ( √x -3 )² ) / ( √x - 3)(√x + 3) -36 / (x -9) ] ³ =
[ (x + 6√3+ 9 +x -6√3 +9 ) / ( x - 9) - 36 / (x -9) ] ³ = [ (2x +18 -36) / (x-9) ] ³ =
[ 2(x-9) / (x -9) ] ³=2³ = 8 .
ответ : 8 .
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task/29843323
11. [ (1/16) ^(-0,75) +27^(2/3) -25 ^(0,5) ] / [ 4^ (0,7) *2^(-0,4) ]
* * * = [ (2⁻⁴) ^ (-3/4) +(3³)^(2/3) - (5²) ^ (0,5) ] / [ (2²)^(0,7) *2^(-0,4) ] =
[ 2^ (-4)*(-3/4) +3 ^(3*2/3) -5^(2*0,5) ] / [ 2^(2*0,7) *2 ^(-0,4) ] * * *
= (2³ +3² - 5) / [ 2^(1,4) *2 ^(-0,4) ] = 12 / [ 2^(1,4 -0,4) ] =12 / 2¹ = 6.
ответ: 6 .
10. [ ( x ^ 0,5 + 3) / ( x ^ 0,5 - 3) + ( x ^ 0,5 -3) /(x ^ 0,5 + 3) -36/ (x -9) ] ³ =
[ ( (√ x + 3 )² + ( √x -3 )² ) / ( √x - 3)(√x + 3) -36 / (x -9) ] ³ =
[ (x + 6√3+ 9 +x -6√3 +9 ) / ( x - 9) - 36 / (x -9) ] ³ = [ (2x +18 -36) / (x-9) ] ³ =
[ 2(x-9) / (x -9) ] ³=2³ = 8 .
ответ : 8 .