Question

5x^2+kx+4 full factored form

Answer 1

Answer:

${\large{\overbrace{\underbrace{\purple{your \: answer: \: 4 \sqrt{5} }}}}} \\ \\ \red♡ dear *----*$

Step-by-step explanation:

$\bf\red{ \underline{ \underline {5x^2+kx+4 }}} \\ \\ \bf\ This \: is \: basic \: foundation \: of \: a \: quadratic \: equation \: in \: x \: of \\ \\ \bf\green{ \underline{ {ax}^{2} + bx + c \: with \: coefficients \: of}} \\ \\ \bf\boxed{a =5 \: b = k \: c = 4 } \\ \\ \bf\pink{now} \\ \\ \bf\underline{ {b}^{2} - 4ac = 0 } \\ \\ \bf\ : \implies {k}^{2} - 4 \times 5 \times 4 = 0 \\ \\ \bf\ : \implies {k}^{2} - 80 = 0 \\ \\ \bf\ : \implies {k}^{2} = 80 \\ \\ \bf\ : \implies \: k = \sqrt{80} \\ \\ \bf\boxed{ : \implies \: k = 4 \sqrt{5} } \\ \\ \\ \large\boxed{ \fcolorbox{orange}{yellow}{hope \: it \: help \: you}}$