Answer:
x² - 4x = 21
x² - 4x - 21 = 0
x² - 7x + 3x - 21 = 0
x( x - 7 ) + 3 ( x - 7 ) = 0
( x + 3 ) ( x - 7 ) = 0
x + 3 = 0 and x - 7 = 0
x = -3 and x = 7
Step-by-step explanation:
B= -20+45/56
B=-20.80
80
You mean the "interest on"
I=800×.1×1=80
Answer:Yes
cool, how long did it take