Solve X2-5 x-10=0 by using quadratic formula and give a your answer Colret to two decimal places​

Question

Solve X2-5 x-10=0
by
using
quadratic formula and
give a your
answer Colret
to two decimal places​

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Melanie 2 months 2021-11-28T13:07:56+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-11-28T13:09:46+00:00

     \tt{ {x}^{2} - 5x - 10 = 0 }

    Method : quadratic formula

     \bf{formulae \:  : x =  \frac{ - b \frac{ + }{}  \sqrt{ {b}^{2} - 4ac } }{2a} }

     \bf \green{a = 1 \: and \: b =  - 5 \: and \: c =  - 10}

     \bf{x=  \frac{ - ( - 5) \frac{ + }{}  \sqrt{ {( - 5)}^{2} - 4(1)( - 10) } }{2 \times 1} }

     \bf{}

     \bf{x =  \frac{  + 5 \frac{ + }{}  \sqrt{ {25} - 40 } }{2} }

    \bf{x =  \frac{  + 5 \frac{ + }{}  \sqrt{ 15 } }{2} }

    Hope you got your answer.

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