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kipiarov [429]
3 years ago
14

Simplify (√2+1)² + (√2-1)²​

Mathematics
1 answer:
rusak2 [61]3 years ago
4 0

Answer:6

Step-by-step explanation:

*we solve every bracket alone

-(√2+1)² =  [rule:1st *1st + 2*1st*2nd + 2nd*2nd]

2+2√2+1

3+2√2

-(√2-1)=  [rule:1st*1st - 2*1st*2nd + 2nd+2nd]

2-2√2+1

3-2√2

-we write the whole equation

3+2√2+3-2√2 (+2√2 - 2√2) {positive and negative remove each other}

3+3=6

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Answer:

1.51*10^5 cm^3

Step-by-step explanation:

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The measures of two sides of a triangle are 7.3 centimeters and 2.94 centimeters. The triangle's perimeter is 14.8 centimeters.
evablogger [386]
The perimeter is the sum of all lengths of the side of a polygon. For a triangle it is expressed as:

P = a + b + c

We let a = 7.3, b = 2.94 and c=x

Therefore, the perimeter of the given triangle is:

14.8 = 7.3 + 2.94 + x

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3 0
3 years ago
Find the value of x ​
tiny-mole [99]

Answer:

x = 150

Step-by-step explanation:

What we need to do is first use the sum of interior angles theorem to find the total sum of this odd hexagon.

n = sides of the shape.

(n-2)*180° = Sum of interior angles

For us this would be 720° total. Now make an equation

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Then we simplify

570 + x = 720

-570         -570

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x = 150

4 0
3 years ago
Read 2 more answers
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