Question
Show that m = 2 is the root of the equation 9m – 4 = 14.
Hint:
root of equation is value of m at which the equation becomes 0 find value of the m which satisfies the given equation.
The correct answer is: m = 2
Ans :- m = 2 is root of equation 9m- 4 = 14
Explanation :-
Let F(m) = 9m - 4 - 14
We know that m=2 is a root if only if F(2) = 0
F(2) = 9(2) - 4 - 14 = 18 - 18 = 0
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