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Bess [88]
3 years ago
7

The area of a square is defined by, A(x) = x 2 - 12x + 36. What is the length of a side of the square?

Mathematics
2 answers:
kumpel [21]3 years ago
8 0
<span>A(x) = x 2 - 12x + 36
</span><span>A(x) = (x -6)^2

answer: length of a side of the square = x - 6</span>
Maksim231197 [3]3 years ago
3 0

Answer: The required length of a side of the square is (x - 6) units.

Step-by-step explanation:  Given that the area of a square is as follows :

A(x)=x^2-12x+36~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

We are to find the length of a side of the square.

We know that

all the sides of a square have equal length l, and its area is given by

A=l^2.

From expression (i), we have

A(x)\\\\=x^2-12x+36\\\\=x^2-2\times x\times 6+6^2\\\\=(x-6)^2.

Therefore, the required length of a side of the square is (x - 6) units.

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Answer:

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The bottom rectangle area is easy, it is 15*9 = 135 cm².

To find the area of the triangle, you only need the base width and its height (you don't need the hypotenuse). You can then use the formula: area triangle is base times half height.

The base width is 15-7 = 8 cm

The height is 22-9 = 13 cm

So the area of the triangle is 13*8/2 = 52 cm²

Together with the 135 of the rectangle that sums to 52+135 = 187 cm².

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