Question

From this eq,
$- 5t {}^{2} - 10t + 5$
We get,
$- 25 = - 10t$
How did it come, can anyone elaborate it plz​

Answer 1

Answer:

Yrr this answer is wrong.

the correct answer is:-

-5t² -10t + 5

=) -5 (t² + 2t -1) (Factor out -5 from the above expression)

hope it's gonna help you...☺

Answer 2

$\red {\huge {\underline{ \bold{Your \: answEr : }}}}$

$\implies \bold{ - 5 {t}^{2} - 10t - 5 = 0 }$

$\implies \bold{5{t}^{2} + 10t + 5 = 0 }$

$\boxed{\blacksquare \: \frak {by \: middle \: term \: splitting}}$

$\implies \bold{5{t}^{2} + 5t + 5t +5 = 0}$

$\implies \bold{5t(t + 1) + 5(t + 1) = 0}$

$\implies \bold{(5t + 5) = 0 \: or, \: (t + 1) = 0}$

$\large \green{\implies \boxed{\bold{t = 1 \: or, \: t = -1 }}}$

$\huge{\red{\ddot{\smile}}}$