F.2 Factorization

👨🏻‍🏫 學術台數學

TsoTinlong

2011-10-07 10:24 pm

If the area of a square is (x^2+4x+4)cm^2, find the length of the square in term of x.

回答 (4)

[匿名]

2011-10-08 2:54 am

✔ 最佳答案

Area of square:
(x^2+4x+4)
=x^2+2(x)(2)+2^2
=(x+2)^2

Since the length of a square are the same.
Therefore the length of the square is (x+2) cm.

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Angel15

2011-10-11 8:14 am

(x^2+4x+4)cm^2
=(x+2)^2 cm^2

length^2 = area
length=(x+2)cm

參考: me

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fighting gravity

2011-10-08 11:58 pm

x^2+4x+4
=(x+2)^2
=x+2
the square length is (x+2)

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william

2011-10-07 10:38 pm

(x^2+4x+4)cm^2

= (X+2)^2

therefore the length of the square is x+2 cm

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