Question

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(i) One of the roots of the quadratic equation 5x2 + kx - 7=0
is 1. Complete the following activity to find the value of k.
- 1 is the root of the quadratic equation 5x2 + kx - 7= 0.
... substitute x = -1 in the equation.
- 1
... 5 x tkx
- 7=0
-7= 0
- k=0
... k =
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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation: