Question

determine the value of k
1) x2+2ax-k=0 if x= -a

Answer 1

Answer:

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Answer 2

Answer:

k = -a²

Step-by-step explanation:

x² + 2ax - k = 0 ,

if, x = - a

x² = (-a)²

x² = a²

so from above equation,

a² + 2 (a) (-a) - k = 0

a² - 2a² - k = 0

- a² - k = 0

- k = a²

k = -a²