If dx^2
+ ex + f = 0) is an identity in x , find the value of d + f +e.
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Step-by-step explanation:
dx^2 + ex + f = 0 can be written as 0x^2 + 0x + 0 = 0
This satisfies the expression so this is the suitable value for variable.
Now, d+f+e = 0+0+0 = 0.
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