x = 2+3√2 y = 5-7√2 x+y=2+3√2+5-7√2=7-4√2
x-y= 2+3√2-(5-7√2)=2+3√2-5+7√2=-3+10√2
x×y=( 2+3√2)*(5-7√2)= 10-14√2+15√2-21*2=-32+√2
x÷y= (2+3√2):(5-7√2)=[(2+3√2)*(5+7√2)]:[(5-7√2)* (5+7√2)]=[10+14√2+15√2+21*2]:[25-98]=[52+29√2]:[-73]=-52/73-29√2/73
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x = 2+3√2
y = 5-7√2
x+y=2+3√2+5-7√2=7-4√2
x-y= 2+3√2-(5-7√2)=2+3√2-5+7√2=-3+10√2
x×y=( 2+3√2)*(5-7√2)= 10-14√2+15√2-21*2=-32+√2
x÷y= (2+3√2):(5-7√2)=[(2+3√2)*(5+7√2)]:[(5-7√2)* (5+7√2)]=[10+14√2+15√2+21*2]:[25-98]=[52+29√2]:[-73]=-52/73-29√2/73