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The number of integral solutions of `x^2+9 |
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Answer» `x^2+9< (x+3)^2` `x^2+9`6x>0` `x>0` `x^2+9+6x<8x+25` `x^2-2x-16<0` `x=(2+-sqrt(4+64))/2` `x=(2+-sqrt(17))/2` `=1+-sqrt17` `1-sqrt17 < x <1+sqrt17 ` `0 < x <1+sqrt17` `0 < x < 5......` `x= 1,2,3,4,5,` `` `` `` `` `` `` `` `` `` `` `` `` `` `` `` `` `` `` `` |
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