Question

Plzzz tell mi completing square method of any example

Answer 1

Hey mate!
your answer is here...

suppose we have taken the equation

${ax}^{2} + bx + c = 0$
where a is not equal to 0
dividing throughout by a, we get
${x}^{2} + \frac{b}{a}x + \frac{c}{a} = 0$
now,
${x}^{2} + \frac{b}{a}x + {( \frac{b}{2a}) }^{2} - { (\frac{b}{2a} })^{2} + \frac{c}{a} = 0$
, adding and subtracting
${( \frac{b}{2a} })^{2}$
,i. e., square of half of the coefficient of x.
$( {x + \frac{b}{2a} })^{2} - \frac{ {b}^{2} - 4ac}{ {4a}^{2} } = 0$

$( {x + \frac{b}{2a} })^{2} = \frac{ {b}^{2} - 4ac}{ {4a}^{2} }$
therefore,
$x + \frac{b}{2a} = \frac{ \frac{ + }{ - } \sqrt{ {b}^{2} - 4ac } }{2a}$

and at last we get,

$x = \frac{ - b \frac{ + }{ - } \sqrt{ {b}^{2} - 4ac } }{2a}$
Thus, the roots of the quadratic equation
${ax}^{2} + bx + c = 0$
are given by
$\: \frac{ - b \frac{ + }{ - } \sqrt{ {b}^{2} - 4ac } }{2a}$
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Mark this answer as brainliest

Answer 2

Hope it helps u ^_^ ^_^ ^_^

plzz mark it as brainliest

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