# How do you factor #x^2 + 3x - 10#?

##### 3 Answers

Jul 23, 2015

#### Explanation:

Two numbers whose product is 10: (1, 10) or (2, 5).

The sign of Sum goes to that which the greater modulus.

The sign of Product (-) shows reverse signs.

Jul 23, 2015

Factor

y = (x - 2)(x + 5)

#### Explanation:

Y = x^2 + 3x - 10.

Find 2 numbers knowing sum (3) and product (-10).

Factor pairs of (-10) -> (-1, 10)(-2, 5). This sum is 3 = b. The 2 numbers are: -2 and 5.

y = (x - 2)(x + 5).

Jul 23, 2015