Question

Factorize the following ​

Answer 1

X² + x - 20

$\huge\bigstar\:$$\Huge\tt\underline\red{ANSWER}$

(x - 4)( x + 5)

$\huge\bigstar\:$$\Huge\tt\underline\blue{EXPLAINATION}$

Explanation:

Find 2 numbers knowing sum (1) and product (-20).

To find them, factor pairs of (-20) --> (-2, 10)(-4, 5). This sum is 1 = b.

Then, these 2 numbers are: -4 and 5.

y = (x - 4)(x + 5)