How do you factorize x squared 2x-15?

Answer 1

17

Answer 2

Factorizing x²+2x-15 gives (x + 5)(x - 3).

Factorizing is to express a number or expression as a product of factors.

The technique of factorizing three terms (x²+2x-15):

1. Break up the first term (x²) into two brackets: (x ...) (x ...)
2. Find two numbers that when multiplied give the third term (-15) and when added give the second term (+2) : (+5, -3) ... (5 * -3 = -15), (5 + -3 = 2)
3. Fill in the two brackets with the aforementioned numbers: (x + 5) (x - 3)
4. x² + 2x - 15 = (x + 5) (x - 3)