Question

Find the value of discriminant for 2x2+5x-2=0

Answer 1

Answer:

x= -2/5

Step-by-step explanation:

2×2= 4-2= 2

therefore 5x= -2

x= -2/5

Answer 2

$\tt\red{Question:-}$

$\small \tt{Find \: the \: value \: of \: discriminant \: for \: 2 {x}^{2} +5x-2=0}$

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$\tt\red{Solution:-}$

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$\small\hookrightarrow \small \tt{2 {x}^{2} + 5x - 2 = 0}$

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$\small\hookrightarrow \small \tt \red{a = 2 \: \: , \: b = 5 \: \: and \: \: c \: = \: - 2 }$

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$\hookrightarrow\small\tt{Discriminant(D) = {b}^{2} - 4ac}$

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$\small\hookrightarrow \small \tt{Put \: }\small \tt \red{a = 2 \: \: , \: b = 5 \: \: and \: \: c \: = \: - 2 }$

$\: \: \: \: \: \: \: \: \: \: \: \: \:$

$\hookrightarrow\small\tt{Discriminant(D) = {5}^{2} - 4 \times 2 \times ( - 2)}$

$\hookrightarrow\small\tt{Discriminant(D) = {5}^{2} - 4 \times - 4}$

$\hookrightarrow\small\tt{Discriminant(D) = 25 + 16}$

$\hookrightarrow \fbox \red{\small\tt {Discriminant(D) = 41}}$

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$\small\tt{Swipe \: the \: ans \: left \: to \: right \: to \: see \: full \: ans}$