Answer:
f(x)=(x+2)(x−(−1+i2√))(x−(−1−i2√))
Sorry if its wrong!
Twelve point nine plus eight equals twenty point nine (12.9 + 8 = 20.9)
Hope this helped :)
Answer:
-2
Step-by-step explanation:
4x+4=-3x-10
7x=-14
x=-2
Answer:
6. 12.5 cm
7. 0.7241
Step-by-step explanation:
6.
You have 2 right triangles. You can use the Pythagorean theorem for each one.
a^2 + b^2 = c^2
Let y = length of vertical side between triangles.
Left triangle:
5^2 + y^2 = 13^2
25 + y^2 = 169
y^2 = 144
y = 12
Right triangle:
3.5^2 + 12^2 = x^2
12.25 + 144 = x^2
x^2 = 156.25
x = 12.5
Answer: x 12.5 cm
7.
For <X, 2.0 ft is adj leg. 2.9 ft is hyp.
cos X = 2.0/2.9 = 0.6897
X = cos^1 0.6897 = 46.397 deg
sin X = sin 46.397 deg = 0.7241
, and 
. This gives a remainder of
, and 
. This gives a new remainder of
, and 
. This gives a new remainder of
and so there is no remainder.
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Quicker method: Use the polynomial remainder theorem, which says the remainder upon dividing a polynomial 
by 
is 
. Here we have
