Question

Is x = -2 a solution of the equation x square-2x+8=0?

Answer 1

Answer:

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Answer 2

x² – 2x + 8

To check whether a given value of x is a solution or not put value in the function and if answer is zero then it is a solution

Putting x = – 2

= ( –2)² – 2( – 2 ) + 8

= 4 + 4 + 8

= 16

≠ 0

Since value is not coming out to be zero hence it is not a solution of the equation.