Simplify (√5-√2)(√5+√2) and(√5+√2)and write whether they are rational or irrationa l

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Simplify (√5-√2)(√5+√2) and(√5+√2)and write whether they are rational or irrationa
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Nevaeh 2 weeks 2021-09-04T17:02:46+00:00 1 Answer 0 views 0

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    2021-09-04T17:04:41+00:00

    ( \sqrt{5}  -  \sqrt{2} )( \sqrt{5}  +  \sqrt{2} ) \\ \:  =  > (   { \sqrt{5} }^{2}  -  { \sqrt{2} }^{2} ) \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \\  =  > \:  \:  3 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:

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18:9+8+9*3-7:3-1*13 = ? ( )