Class 10 Math All topics Quadratic Equations

Find which of the following equations are quadratic:

$7x_{3}−2x_{2}+10=(2x−5)_{2}$

$7x_{3}−2x_{2}+10=(2x−5)_{2}$

Solution: $7x_{3}−2x_{2}+10=(2x−5)_{2}$

$⇒7x_{3}−2x_{2}+10=4x_{2}−20x+25$

$⇒7x_{3}−6x_{2}+20x−15=0;$

which is not of the general form ax $_{2}+bx+c=0$.

And it's a cubic equation.

Thus, the given equation is not a quadratic equation.

$⇒7x_{3}−2x_{2}+10=4x_{2}−20x+25$

$⇒7x_{3}−6x_{2}+20x−15=0;$

which is not of the general form ax $_{2}+bx+c=0$.

And it's a cubic equation.

Thus, the given equation is not a quadratic equation.

Similar topics

functions

introduction to trigonometry

some applications of trigonometry

quadratic equations

arithmetic progressions

functions

introduction to trigonometry

some applications of trigonometry

quadratic equations

arithmetic progressions

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