Question

1. Find the value of m so that the equation x + 10x + 21 = 0 and x2 + 9x + m
common root. Find also the equation formed by the other roots.
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Answer 1

Answer:

21

Step-by-step explanation:

x+10x+21

x+x+9x+21

x²+9x+21

Therefore,

in x²+9x+m

m=21