求解数学题
2018-10-28
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解√16×81
=√16×√81
=4×9
=36.
√7X7X5X5
=7×5
=35
√-4 X (-25)
=√4X25
=2X5
=10
√5X5+12X12
=√25+144
=√169
=13
√17X17-8X8
=√17X17-8X8
=√225
=15
√x²+x²y²
=√x²(1+y²)
=x√1+y²
=√16×√81
=4×9
=36.
√7X7X5X5
=7×5
=35
√-4 X (-25)
=√4X25
=2X5
=10
√5X5+12X12
=√25+144
=√169
=13
√17X17-8X8
=√17X17-8X8
=√225
=15
√x²+x²y²
=√x²(1+y²)
=x√1+y²
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36 35 10
13 15 X(1+Y)
13 15 X(1+Y)
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