Question

one root of the equation m² + bm + 10 = 0 is m= 5 then b=? A)= 4, B)= -35, C)= -7, D)= -4.
please give me answer ​

Answer 1

Answer:

C)= -7

Step-by-step explanation:

If m = 5 is a root of equation m² + bm + 10 = 0

then, 5² + 5×b + 10 = 0

=> 35 + 5b = 0

=> 5b = -35

=> b = -7

So, correct answer is C)= -7.

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