Question

Someone please solve no. 37.

Answer 1

$( {.85}^{3} + {.15}^{3} ) \div ( {.85}^{2} + {.15}^{2} -.85 \times .15) \\ \\ = (.85 + .15)( {.85}^{2} + {.15}^{2} - .85 \times .15) \div ( {.85}^{2} + {.15}^{2} - .85 \times .15) \\ \\ = (.85 + .15) \\ = 1$
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