(n+2)(n+3)=506 求n

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(n+2)(n+3)=506求n(n+2)(n+3)=506求n(n+2)(n+3)=506求n20(n+2)(n+3)=n×n+5n+6=506n×n+5n-500=0解得n=20或n=-25希望采

(n+2)(n+3)=506 求n
(n+2)(n+3)=506 求n

(n+2)(n+3)=506 求n
20

(n+2)(n+3)=n×n+5n+6=506
n×n+5n-500=0
解得n=20 或n=-25
希望采纳谢谢- -#

n=20 n=-25