Solve this sum
(3+√3) (2+√2)
Answers
Step-by-step explanation:
Now, I’m going to use pythagoras, namely:
Now … we’ll extend that line with a 45° line of root 3. And that gives us a line of root 2 + root 3 length.
But how long are the sides of that root 3 triange? well …
a² + b² = c²
considering it’s a 45° triangle, a=b, and considering c equals the root of 3
a²+a² = root(3)²
2a² = 3
a² = 3/2
a = root (3/2)
So, now, considering the “full” triangle: which has a height & with 1 larger then the previous triangle:
a² + b² = c²
2a² = c²
2( 1+ root (3/2) ) ² = c²
2( 1 + 2root(3/2) + 3/2) = c²
considering 2 = root(2) ², so 2/root(2) = root (2)²/root(2) = root(2)
2( 1 + root(2)root(3) + 3/2) = c²
2( 1 + root(6) + 3/2) = c²
2 + 2root(6) + 3 = c²
answer: 5+26–√−−−−−−−√
in retrospect, we could have just done
(a−−√+b√)2=a−−√2+2a−−√b√+b√2=a+2ab−−√+b
if you square both sides
a−−√+b√=a+b+2ab−−√−−−−−−−−−−−√
Answer:
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