1.x^2 +6x - 4 = 6x
X^2 + 6x -4 - 6x = 0
X^2 - 4 = 0
By difference of two squares :
X^2 - 4 = 0 can be written as (x-2) (x+2) = 0
(X-2)=0 therefore x= 2
(X+2)=0 therefore x= -2
2. X^2 - 8x = -6x
X^2 -8x + 6x = 0
X^2 - 2x = 0
X(X-2) = 0
X= 0, X= 2
Answer:
2.3283064
Step-by-step explanation:
Answer:
The estimate is greater then.
Step-by-step explanation:
143*2=286
286*2=572 not 6,517
Answer:
20,000 divided by 4,250
Step-by-step explanation: