Answer:
Step-by-step explanation:
One approach would be to begin the indicated multiplication: Multiply a² by a, obtaining a³, which is the first term of the product a3 – a2b + ab2 + a2b – ab2 + b3. Please use " ^ " to indicate exponentiation, or (²) or (³):
a(a² - ab + b²) = a³ (plus 2 more terms, which are -a²b and ab²).
Here we are applying the distributive property of multiplication.
Answer:
vfvv j mv fvkfvnfjvnsjvnfjsvndfjkv
Step-by-step explanation:
cc dscds j
Step-by-step explanation:
(2)
cos(2θ) tan θ + sin θ = 0
tan θ (cos(2θ) + cos θ) = 0
tan θ = 0
θ = kπ
cos(2θ) + cos θ = 0
cos(2θ) = -cos θ
cos(2θ) = cos(π − θ)
2θ = π − θ + 2kπ
3θ = (2k + 1) π
θ = (2k + 1) π / 3
Therefore, θ = kπ or (2k + 1) π / 3.
(3)
2 cos² θ − 2 cos²(2θ)
Power reduction formula:
1 + cos(2θ) − (1 + cos(4θ))
cos(2θ) − cos(4θ)
Answer:
-4
Step-by-step explanation:
2x + 3y = -14
x - y = 3
Multiply the second equation by -2 to eliminate x
2x + 3y = -14
-2x +2 y = -6
-----------------------
5y = -20
Divide by 5
5y/5 = -20/5
y = -4
V = P(1 + i)^n
Where,
V = 10.400
P = 10.000
i = 8%
n = ?
Then we will following:
10.400 = 10.000(1+8%)^n
10.400/10.000 = (1 +0,08)^n
1,04 = 1,08^n
Applying Logarithm on both sides, we will have:
Log (1,04) = Log(1,08^n)
Log(1,04) = n.Log(1,08)
n = Log(1,04)÷Log(1,08)
n = 0,5 years
Aplication rules of 3
1 years _______ 12months
0,5 years _______ x
x = 0,5 . 12 months
x = 6 months