Answer:
40.9
Step-by-step explanation:
8+10+8.9+10+4=40.9
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Answer:
a. -1
b. 8
c. 3
Step-by-step explanation:
a.
6-7
(factor out the negative sign)
-(7-6)
(calculate)
-1
(your answer)
b.
6-(-2)
(remove the parentheses)
6+2
(calculate)
8
(your answer)
c.
6-3=3
The answer is going to be A.
Difference of two squares:
x² - y² = (x - y)(x + 8)
So for difference of squares that has (x -8) as one of the factor.
The other factor is (x + 8)
(x - 8)(x + 8) = x² - 8²
= x² - 64.