If the roots of equation \( 2 \mathrm{x}^{2}+k x-8=0 \) are equal and of opposite sign, then the...

Channel:
PW Solutions
Subscribers:
453,000
Published on ● Video Link: https://www.youtube.com/watch?v=Dbz1u7Ib7Cs


Duration: 2:11
0 views
0

If the roots of equation \( 2 \mathrm{x}^{2}+k x-8=0 \) are equal and of opposite sign, then the value of \( \mathrm{k} \) is-
(a) 0
(b) \( -2 \)
(c) 4
ЁЯУ▓PW App Link - https://bit.ly/YTAI_PWAP
ЁЯМРPW Website - https://www.pw.live



Other Videos By PW Solutions


2023-01-15The order of leaving group ability is: i. \( -\mathrm{OAc} \) ii. \( -\mathrm{OMe} \) iii. \( -\...
2023-01-15\( A \) рдФрд░ \( B \) рдорд┐рд▓рдХрд░ рдПрдХ рдХрд╛рдо рдХреЛ 6 рджрд┐рдиреЛрдВ рдореЗрдВ рдХрд░ рд╕рдХрддреЗ рд╣реИрдВред рдЙрд╕реА рдХрд╛рдо рдХреЛ \( B \) рдФрд░ \( C 9 \) рджрд┐рдиреЛ...
2023-01-15Simplify the following using the formula: \( (a-b)(a+b)=\left\{\mathrm{a}^{2}-\mathrm{b}^{2}\rig...
2023-01-15A body weighs \( 450 \mathrm{gf} \) in air and 310 gf when completely immersed in water. Find it...
2023-01-15\[ \lim _{x \rightarrow 0}\left(\frac{e^{3 x}-e^{2 x}}{x}\right) \] \( \mathrm{P} \)
2023-01-15At CMC, the surfactant molecules undergo: a) Association b) Aggregation c) Micelle formation d) ...
2023-01-15Consider the following reaction and statements: \[ \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)...
2023-01-15\( \mathrm{m} \) рджреНрд░рд╡реНрдпрдорд╛рди рдХрд╛ рдПрдХ рдкрд┐рдгреНрдб рдПрдХ рдЕрдиреНрдп \( 2 \mathrm{~m} \) рджреНрд░рд╡реНрдпрдорд╛рди рдХреЗ рд╕реНрдерд┐рд░ рдкрд┐рдгреНрдб рд╕реЗ рд╕...
2023-01-15In an irreversible process taking place at constant \( T \) and \( P \) and in which only pressu...
2023-01-15A hole of area \( 1 \mathrm{~mm}^{2} \) opens near the bottom of a water tank of height \( 20 \m...
2023-01-15If the roots of equation \( 2 \mathrm{x}^{2}+k x-8=0 \) are equal and of opposite sign, then the...
2023-01-15Find the elongation in spring.
2023-01-15Asertion: WBCs accumulate at site of wounds by diapedesis. Reason: It is squeezing of leucocytes...
2023-01-15What is Photoperiodism? \( \mathrm{P} \)
2023-01-15Unique feature of bryophytes? \( \mathrm{P} \)
2023-01-15What is mitochondria? (v)
2023-01-15Consider an imaginary ion \( { }_{22}^{48} \mathrm{X}^{3-} \). The nucleus contains a\% more neu...
2023-01-15Complete the table below with details about individuals in the education field and their work. I...
2023-01-15рдПрдХ рдкрддреНрдерд░ рдХрд╛ рдЖрдкреЗрдХреНрд╖рд┐рдд рдШрдирдЯреНрд╡ 2 рд╣реИред рдпрд╣ рдкрд╛рдиреА рдореЗрдВ рджреВрдмрд╛ рд╣реБрдЖ рд╣реИред рдЗрд╕реЗ рдкрд╛рдиреА рдХреЗ рдЕрдиреНрджрд░ 4 рдореАреж рдЧрд╣рд░рд╛рдИ рд╕реЗ 1 рдореАреж...
2023-01-15An audio signal \( \mathrm{v}_{\mathrm{m}}=20 \sin 2 \pi(1500 \mathrm{t})= \) amplitude modulate...
2023-01-15рдирд┐рдореНрди рдЖрдБрдХрдбрд╝реЛрдВ рдХрд╛ рд╕рдорд╛рдиреНрддрд░ рдорд╛рдзреНрдп рдЬреНрдЮрд╛рдд рдХреАрдЬрд┐рдП- \begin{tabular}{|c|c|c|c|c|c|c|} \hline рд╡рд░реНрдЧ рдЕрдиреНрддрд░рд╛рд▓...