Question

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Find the value of k such that x= 1 is one of the roots of the quadratic equation 3x2 – kx + 7 = 0
3) A man walks 20 m due east and 15 m due South. How far is he from the starting point. ​

Answer 1

Answer:

take x=1 and in equation so answer will be 10.

Answer 2

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