Question

Find the roots of the polynomial equation.

x2 – 8x – 48 = 0


A.
–12, 4

B.
–4, 12

C.
–6, 8

D.
–8, 6
B?

Answer 1

@Luigi0210

Answer 2

\[\huge x^2 – 8x – 48 = 0 \rightarrow x^2 – 12x +4x– 48 = 0\]
\[\huge \rightarrow x(x – 12) +4(x– 12) = 0\]
\[\huge \rightarrow (x – 12) (x+4) = 0\]
i.e. x-12= 0 or x+4 = 0
i.e. x=12 or x=-4
hence x= -4, 12 are the required roots ofthe given quadratic equation.
thus option B. –4, 12 is the correct answer.

@blueweek77

Answer 3

Thanks @dpasingh :D