Hello!
You solve this algebraically
4n - 9 = -9
Add 9 to both sides
4n = 0
Divide both sides by 4
n = 0
The answer is 0
Hope this helps!
Perfect squares are rational numbers multiplied by themselves. Here are the perfect squares between 25 and 100:
5*5=25
6*6=36
7*7=49
8*8=64
9*9=81
10*10=100
Hope this helps :)
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multiplication is first (in this case) and then addition
2 x 8 = 16
16 + 2 = 18
18 is your answer
hope this helps
Step-by-step explanation:
In the expression a^n, for integer values of n greater than 1, there are n factors. For example, a^2 = a * 2 (2 factors), a^3 = a * a * a (3 factors), etc.
For a non-negative value of a, a^n is non-negative for all values of n.
If a is negative, and n is even, then a^n is non-negative.
If a is negative, and n is odd, then a^n is negative.
|a| is non-negative for all values of a.
sqrt_n(a^n) is negative for negative a and odd n, but |a| is always non-negative, so sqrtn(a^n) cannot equal |a| for odd n.