Question

[8.03] What are the factors of x2 + 12x + 20?

(x + 4)(x + 5)

(x + 2)(x + 10)

(x − 4)(x − 5)

(x − 2)(x − 10)

Answer 1

u have to use this method
first u should find the roots of the equation
x1 and x2 r ur roots----->(x-x1)(x-x2)

Answer 2

ax^2+bx+c=0
\[\Delta = b ^{2} -4ac\]
\[x1=(-b+\sqrt{\Delta})/2a\]
\[x2=(-b-\sqrt{\Delta})/2a\]