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GaryK [48]
3 years ago
13

Is c^2 - 6c +9 a perfect square?

Mathematics
2 answers:
katrin [286]3 years ago
6 0

Answer:(c-3)(c-3) yes

Step-by-step explanation:

C²-6c-9

(c²-3c-)(3c+9)

c(c-3)-3(c-3)

(c-3)(c-3)

Anni [7]3 years ago
3 0

Step-by-step explanation:

{c}^{2}  - 6c + 9 \\  =  {c}^{2}  - 2 \times 3 \times c +  {3}^{2}  \\  = (c - 3)^{2}  \\

Therefore, c^2 - 6c +9 is a perfect square.

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2. Start to remove the parentheses from the center to the edges:

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Give the degree and classify the polynomial by the number of terms- 3
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xz_007 [3.2K]
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3 years ago
A square piece of paper has an area of x2 square units. A
Dmitry_Shevchenko [17]

Answer:

Length of rectangular strip = 12

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Step-by-step explanation:

Area of square x^2

area of rectangle is given by length * width

Length of rectangular strip = x

width of rectangular strip = 2

area of rectangular strip =  length * width = 2*x = 2x

Area of square piece of paper when  rectangular strip is taken away from it

= Area of square - area of rectangular strip

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It is given that Area of square piece of paper when  rectangular strip is taken away from it is 120 square units.

Thus,

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x = -10 or x = 12

but length cannot  be negative hence neglecting x = -10

hence value of x is 12.

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Answer:

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Step-by-step explanation:

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