Question

Find the discriminant of the following equation x square+ 2x+4=0

Answer 1

Answer:

$x {}^{2} + 2x + 4 = 0$

$d = b {}^{2} - 4ac$

$b = 2 \: and \: a = 1 \: c = 4$

$d = 2 {}^{2} - 4 \times 1 \times 4$

$4 - 16$

$d = - 12$

Answer 2

$\huge{\sf{\underline{\underline{\pink{Solution:-}}}}}$

${\sf{\underline{\blue{Equation:-}}}}$ $\sf\green{x^2 + 2x + 4 = 0}$

$\sf\red{Here, \:a = 1 \:, b = 2\: , c = 4}$

${\sf{\underline{\underline{\pink{As \: we \: know}}}}}$

${\sf{\underline{\underline{\green{Discriminant (D)}}}}}$ $\sf\blue{=> b^2 - 4ac}$

$\sf\orange{=> (2)^2 - 4 × 1 × 4}$

$\sf\orange{=> 4 - 16}$

$\sf\pink{=> - 12}$