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Nina [5.8K]
3 years ago
7

I know the answer I just need to know how to solve it. The highlighted is the answer.

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
7 0

x^2+4x+4 =  8\\\\\implies  x^2+2\cdot 2 \cdot x+2^2 = 8\\ \\\implies (x+2)^2 = 8\\\\\implies x+2 =\pm\sqrt 8\\\\\implies x +2 = \pm\sqrt{4  \times 2}\\\\\implies x +2 = \pm2\sqrt 2\\\\\implies x =-2 \pm2\sqrt2

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A wooden flooring strip is 20 1/2 inches long. If you cut off 4 3/4 inches from one end what will be the new length of the strip
KonstantinChe [14]

Length of wooden flooring strip = 20\frac{1}{2} or \frac{41}{2}

Length of strip cut off = 4\frac{3}{4} or \frac{19}{4}

So, the new length of the strip will be=

\frac{41}{2}- \frac{19}{4}

=\frac{82-19}{4}=\frac{63}{4}

Hence, the new length of the flooring strip will be \frac{63}{4} inches and in mixed fraction it will be 15\frac{3}{4} inches.

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3 years ago
Please help me and include an explanation !!
natita [175]

Answer:

202

Step-by-step explanation:

I dont know how to quite explain this but there is your answer ! Hopefully someone else explains this to you so you can understand ^^

3 0
3 years ago
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Helen [10]

Answer:n = 6

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Answer:

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Step-by-step explanation:

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second question:

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