Question

determine by substituion if 5 is the root of 2x+5=20
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Answer 1

Answer:

hope this is helpfull

Step-by-step explanation:

To check whether a number is a root of a given equation, put the number in that equation in place of the variable. if the equation is satisfied, it is a root of the equation, else not.

Here, LHS = 2(5) + 5 = 15 ≠ 20

The equation is not satisfied. hence it is not a root of the given equation.