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Schach [20]
3 years ago
9

How do you answer (-3)² ?

Mathematics
2 answers:
nadya68 [22]3 years ago
7 0
The two at the top technically means  how many times the number in the bracket times ITSELF by, so its technically -3 x -3 which is +9 , cause a negative x negative = positive

Tcecarenko [31]3 years ago
5 0
(-3)^{2}  is the same as;
(-3)*(-3)
=9
A negative number is multiplied by a negative number gives a positive number
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A square mirror has sides measuring 2 ft less than the sides of a square painting. If the difference between their areas is 32 f
kari74 [83]

Answer:  The side lengths of mirror and painting are 7 ft and 9 ft respectively.

Step-by-step explanation:  Given that a square mirror has sides measuring 2 ft less than the sides of a square painting and the difference between their areas is 32 ft.

We are to find the lengths of the sides of the mirror and the painting.

Let x ft represents the length of the side of mirror. Then, the side length of square painting is (x+2) ft.

According to the given information, we have

\textup{area of painting}-\textup{area of mirror}=32\\\\\Rightarrow (x+2)^2-x^2=32\\\\\Rightarrow x^2+4x+4-x^2=32\\\\\Rightarrow  4x=28\\\\\Rightarrow x=\dfrac{28}{4}\\\\\Rightarrow x=7.

Therefore, the side length of mirror is 7 ft and the side length of painting is (7+2) = 9 ft.

Thus, the side lengths of mirror and painting are 7 ft and 9 ft respectively.

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3 years ago
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Step-by-step explanation:

 

4 0
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Read 2 more answers
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Ede4ka [16]
X = 4.

You have to distribute by multiplying -4 by the numbers between -3x and -2.

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