Question

X2 - 10x + 21 = 0
How do you work this problem?

Answer 1

x = 3, 7

Explanation:

Step 1: Write equation

x² - 10x + 21 = 0

Step 2: Factor

(x - 7)(x - 3) = 0

Step 3: Find roots

x - 7 = 0

x = 7

x - 3 =0

x = 3