упростите выражение: 1)0,42ac^3×1 3/7a^4c^2
2)1,2xyz×2 1/6x^5y^6
3)-2 1/3m^np^3+(3/7np^4)^2
4)(1 1/2x^2y^3)^5×16/27x^8y^2
2)1,2xyz×2 1/6x^5y^6
3)-2 1/3m^np^3+(3/7np^4)^2
4)(1 1/2x^2y^3)^5×16/27x^8y^2
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Answers & Comments
=42/100•10/7•a^5•c^5=0.6a^5•c^5.
2) 1.2xyz•[2]1/6x^5•y^6=2.6x^6•y^7•z.
3) [-2]1/3m²np³•(3/7•np⁴)²=
-9/49n²p^8•7/3m²n•p³=-3/7n³m²p¹¹.
4) ([1]1/2•x²•y²)^5•16/27•x^8•y².
243/32•x^7•y^7•16/27•x^8•y².
9/2•x^15•y^9.