146.
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147.
Решаем эти же задания с помощью степеней.
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146.
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147.
1)![8-a=2^3 -(\sqrt[3]{a} )^3 =(2-\sqrt[3]{a} )) (4+2\sqrt[3]{a} +\sqrt[3]{a^2} ) 8-a=2^3 -(\sqrt[3]{a} )^3 =(2-\sqrt[3]{a} )) (4+2\sqrt[3]{a} +\sqrt[3]{a^2} )](https://tex.z-dn.net/?f=8-a%3D2%5E3%20-%28%5Csqrt%5B3%5D%7Ba%7D%20%29%5E3%20%3D%282-%5Csqrt%5B3%5D%7Ba%7D%20%29%29%20%284%2B2%5Csqrt%5B3%5D%7Ba%7D%20%2B%5Csqrt%5B3%5D%7Ba%5E2%7D%20%29)
2)![b+27=(\sqrt[3]{b} )^3+3^3=(\sqrt[3]{b}+3)( \sqrt[3]{b^2}-3 \sqrt[3]{b} +9) b+27=(\sqrt[3]{b} )^3+3^3=(\sqrt[3]{b}+3)( \sqrt[3]{b^2}-3 \sqrt[3]{b} +9)](https://tex.z-dn.net/?f=b%2B27%3D%28%5Csqrt%5B3%5D%7Bb%7D%20%29%5E3%2B3%5E3%3D%28%5Csqrt%5B3%5D%7Bb%7D%2B3%29%28%20%5Csqrt%5B3%5D%7Bb%5E2%7D-3%20%5Csqrt%5B3%5D%7Bb%7D%20%2B9%29)
3)![1000x-3=(10\sqrt[3]{x} )^3-(\sqrt[3]{3}) ^3=(10\sqrt[3]{3} -\sqrt[3]{x} )(100\sqrt[3]{x^2} +10\sqrt[3]{3x} +\sqrt[3]{9} ) 1000x-3=(10\sqrt[3]{x} )^3-(\sqrt[3]{3}) ^3=(10\sqrt[3]{3} -\sqrt[3]{x} )(100\sqrt[3]{x^2} +10\sqrt[3]{3x} +\sqrt[3]{9} )](https://tex.z-dn.net/?f=1000x-3%3D%2810%5Csqrt%5B3%5D%7Bx%7D%20%29%5E3-%28%5Csqrt%5B3%5D%7B3%7D%29%20%5E3%3D%2810%5Csqrt%5B3%5D%7B3%7D%20-%5Csqrt%5B3%5D%7Bx%7D%20%29%28100%5Csqrt%5B3%5D%7Bx%5E2%7D%20%2B10%5Csqrt%5B3%5D%7B3x%7D%20%2B%5Csqrt%5B3%5D%7B9%7D%20%29)
Решаем эти же задания с помощью степеней.
146.
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3)
147.
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2)
3)