which of the following equation are quadratic equation? 2+m cube=3,n(n-2)=0,r square=2r-5,x+=4by x =7
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correct answer is
1)n(n-2) = 0
n²-2n = 0
2)r² = 2r-5
because it's highest power only 2
1)n(n-2) = 0
n²-2n = 0
2)r² = 2r-5
because it's highest power only 2
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