if x^2-10x+21=(x+m)(x+n) , then m+n=
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Answered by
24
Step-by-step explanation:
x²-10x+21
x²-7x-3x+21
x(x-7)-3(x-7)
(x-3)(x-7)
(x-3)(x-7)=(x+m)(x+n)
m=-3 and n=-7
m+n=-7-3= -10
Answered by
2
Answer:
it helped in my test.. thank you
Step-by-step explanation:
if you will not give thanks.. then I don't bother about it :)
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