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Quadratic Equations — Mathematics STD 10 — Question

ICSE BoardEnglish MediumSTD 10MathematicsQuadratic Equations3 Marks
Question
Solve the following quadratic equation using formula method only
$6x^2 + 7x - 10 = 0$
✓

Answer

$6 x^2+7 x-10=0 $
$ a=6 ; b=7 ; c=-10$
$ D=b^2-4 a c $
$ =(7)^2-4(6)(-10) $
$ =49+240 $
$ =289$
$x=\frac{-b \pm \sqrt{b^2-4 a c}}{2 a} $
$x=\frac{-7 \pm \sqrt{289}}{12}$

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