Question

英文版的数学题！！ 求高手！！很急！！在线等！

w我需要步骤！！ 最好可以帮我照下来！！ 会给更多分的！！ 照不了打下来y也可以！！会加分！！
是这个！！25。27。29！ 谢谢了！xu需要步骤！最好可以照下来！

Answer 1

Given that the equation kx²+12x+k=0，where k is a positive constant ,has equal roots ,find the value of k
方程kx²+12x+k=0，k是正数，有两个相等的根，求k的值
12^2-4k^2=0，k=6（k=-6舍掉）

Answer 2

six trees are equally spaced along one side of a straight road.the distance from the first tree to the fourth is 60 feet,what is the distance in feet between the first and last trees?
60/3=20;
20*5=100
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追问

25、27、29

追答

Given that the equation kx²+12x+k=0，where k is a positive constant ,has equal roots ,find the value of k
方程kx²+12x+k=0，k是正数，有两个相等的根，求k的值
12^2-4k^2=0，k=6（k=-6舍掉）