Question

2. One of the roots of the quadratic equation kx2 - 14x - 5 = 0 is 5
Complete the following activity to find the value of k.
5 is the root of the quadratic equation kx2 - 14x - 5 = 0.
:: substitute x = 5 in the equation.
KX (5)² - x 5 – 5=0.
.: 25 k - --5 = 0.
:: 25 k =
:: k =
​

Answer 1

Answer:

K×(5)2-14×5-5=0

25k-70-5=0

25k-75=0

25k=75

K=75/25

K=3

Step-by-step explanation:

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Answer 2

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