Write the polynomial x^2-2x-15 in factored form

(x - 5) (x + 3)

Step-by-step explanation:

x^2 - 2x - 15

(x - 5) (x + 3)

(x + 3) (x - 5)

Step-by-step explanation:

When factorising quadratic equations you have to remember 3 things. Factors, sum and product. The standard way quadratic equation are formed is ax² + bx + c

→ The sum is the 'b' value, two number which add to this

The product is the 'c' value, two number which multiply to this

x² - 2x - 15

We need to two numbers which add to - 2 and multiply to - 15. Those two numbers are - 5 and 3 so

x² - 5x + 3x - 15

→ Take out the factors separately

x (x - 5) + 3 (x - 5)

(x + 3) (x - 5)