Question:
Show that x=-2 is a solution of 3x² 13x 14=0
Answer:
Given, equation is
3x2 + 13x + 14 = 0
If x = -2 is a solution, then it satisfy the equation.
Now put x = -2 in the given equation, we get
3*(-2)2 + 13*(-2) + 14
= 3*4 - 26 +14
= 12 - 26 + 14
= 26 - 26
= 0
which is equal to the RHS of the equation.
So, x = -2 is a solution of the given equation.
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