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If x=-7 is a root of the equation x^2+kx+49=0, then k=​

User Rhesous
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1 Answer

2 votes

Answer:


k=14

Explanation:

Given:


x^(2)+kx+49 = 0


x = -7

Substitution can be used to find the value of
k:


(-7)^(2)+(-7)k+49 = 0


49-7k+49 = 0


98 -7k = 0


k = 14

Hope this helps :)

User Dylanthepiguy
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