Help please im pretty sure this is called angle sum theory but I could be wrong
2 answers:
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Answer:
0
4
15
27
Step-by-step explanation:
a) The first expression is
When a=2 and b=5, we get
b) The second expression is
We substitute a=2 and b=5;
c) The next expression is
We substitute b=5 to get:
d) The fourth expression is
When a=2 and b=5
We know that:
0<4<15<27
±1/2. The equation has two possible solutions +1/2 and -1/2.
The problem is a quadratic equations and it can be solved using the equation .
Ordering the quadratic equation given in the problem, we obtain where a = 4, b = 0, and c = -1
Substituting the values