Answer:
The answer is (x + 3) (x - 7) = 0
Step-by-step explanation:
x² - 4x = 21
x² - 4x - 21 = 0
x² - 7x + 3x - 21 = 0
x(x - 7) + 3(x - 7) = 0
(x + 3) (x - 7) = 0
Thus, The answer is (x + 3) (x - 7) = 0
<em><u>-TheUnknownScientist</u></em>
Answer:
here are a few that are equivalent
8:6
28:21
48:36
68:51
Please- Parenthesis
Excuse -Exponets
My - Multiplication
dear- Division
aunt- Addition
sally- Subtraction
Answer:

Step-by-step explanation:

The same shape and size is the parallelogram because if you draw a a diagonal line through the parallelogram you would get a triangle hope this helps.