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Last updated 4:35 PM on 2/6/26
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6 Terms
1
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What is the formula for Heron's area?
The area A of a triangle with sides a, b, and c is given by: A = \sqrt{s(s-a)(s-b)(s-c) where s = \frac{a+b+c}{2}.
2
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What is the formula to calculate the probability of an event?
The formula is P(A) = \frac{n(A)}{n(S)} where P(A) is the probability of event A, n(A) is the number of favorable outcomes, and n(S) is the total number of possible outcomes.
3
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(a+b) ²
(a+b)²=a²+b²+2ab
4
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a-b
(a-b)²=a²-b²-2ab
5
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a²-b²
(a+b)(a-b) =a²-b²
6
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If a+b+c =0
(a+b+c) =3abc
Note 
Flashcards (39)