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P-1 Quadratic Equations — Maths STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10MathsP-1 Quadratic Equations2 Marks
Question
$2 x^2-7 x+6=0$ check whether$x=-2$ are solutions of the equations.
✓

Answer

Let $x=-2$ in $2 x^2-7 x+6$
\*
\begin{aligned}
2 x^2-7 x+6= & 2(-2)^2-7(-2)+6 \\
& =2 \times 4+14+6 \\
& =28 \neq 0
\end{aligned}
$
$\therefore x=-2$ is not a solution of the equation.

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