Question

What are the factors of x2 - 49?

Answer 1

Do you Have any answer choices ?

Answer 2

Remember earlier how I said \[x^2-49 = (x-7)(x+7)\] take each of those results let them = 0 and solve for x, woo!

Answer 3

What are the factors of x2 - 49?
(x - 1)(x + 49) (x - 7)(x - 7) (x - 7)(x + 7) Prime

Answer 4

x^2 - 49 is known as a "difference of two perfect squares". (You'll see a lot of those in math classes.)

Memorize the equation:

a^2 - b^2 = (a + b)(a - b)

x^2 - 49 = (x + 7)(x - 7)

Answer 5

The factors are already given!