Question

2x²-7x+6=0 check whether x=-2 is the solutions of the equation​

Answer 1

Answer:

Let P(x)= 2x²-7x+6

when x= -2

P(2) = 2×(-2)²-7×(-2)+6

=8+14+6

=28

Since P(2)≠0, x=-2 is not the solution.

Answer 2

Answer:

See the explanation

Step-by-step explanation:

Substitute $x=-2$ in the given equation

            $2x^2-7x+6=0$

      $\Rightarrow 2(-2)^2-7(-2)+6=0\\\Rightarrow 2(4)+14+6=0\\\Rightarrow 8+14+6=0\\\Rightarrow 28=0 \text{ Clearly it is false }$

Hence $x=-2$ is not a solution of $2x^2-7x+6=0$