Math, asked by my884353, 5 months ago



2 x2 - 3x + 5 = 0

Answers

Answered by ITZBFF
10

 \mathsf \red{Question  :  \: } \mathsf{2 {x}^{2}  - 3x + 5 = 0} \\  \\  \mathsf \red{by \: using \: quadratic \: formula : } \\  \\   \boxed{\mathsf \blue{x =  \frac{ - b \:  \pm \:  \sqrt{ {b}^{2} - 4ac } }{2a} }} \\  \\  \mathsf{from \: above \: equation :  \: a = 2 \:  \:  \: b =  - 3 \:  \:  \: c = 5} \\  \\  \mathsf{x =  \frac{ - ( - 3) \:  \pm \:  \sqrt{ {( - 3)}^{2}  - 4(2)(5)} }{2(2)} } \\  \\  \mathsf{x =  \frac{3 \:  \pm \:  \sqrt{9 - 40} }{4} } \\  \\  \mathsf{x =  \frac{3 \:  \pm \:  \sqrt{ - 31} }{4} } \\  \\   \boxed{\mathsf \blue{x =  \frac{3 +  \sqrt{ - 31} }{4} , \:  \:  \:  \frac{ 3 -  \sqrt{ - 31} }{4} }} \\  \\  \boxed{ \mathsf \red{note :  \: } \mathsf{the \: roots \: are \: not \: real}}

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