Answer:
Step-by-step explanation:
First confirm that x = 1 is one of the zeros.
f(1) = 2(1)^3 - 14(1)^2 + 38(1) - 26
f(1) = 2 - 14 + 38 - 26
f(1) = -12 + 38 = + 26
f(1) = 26 - 26
f(1) = 0
=========================
next perform a long division
x -1 || 2x^3 - 14x^2 + 38x - 26 || 2x^2 - 12x + 26
2x^3 - 2x^2
===========
-12x^2 + 28x
-12x^2 +12x
==========
26x -26
26x - 26
========
0
Now you can factor 2x^2 - 12x + 26
2(x^2 - 6x + 13)
The discriminate of the quadratic is negative. (36 - 4*1*13) = - 16
So you are going to get a complex result.
x = -(-6) +/- sqrt(-16)
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2
x = 3 +/- 2i
f(x) = 2*(x - 1)*(x - 3 + 2i)*(x - 3 - 2i)
The zeros are
1
3 +/- 2i
Answer:
12
Step-by-step explanation:
These triangles are similar using the AA theroem. This means there sides are in corresponding proportion.
Side AR and Side TE are corresponding. Use this proportion.
This side the triangle SAR side lengths are 3/4 of side lengths of triangle SET.
We know that RS+ST=21
And that RS=3/4(ST).
x=12.
Side ST is 12
Answer:
incorrect
Step-by-step explanation:
To determine if the triangle is right
If the square of the longest side is equal to the sum of the squares on the other 2 sides then the triangle is right, that is
longest side = 10 and 10² = 100
6² + 8² = 36 + 64 = 100
Thus the triangle is right.
She should have added 6² and 8² and compared that to 10²
Ur answer is 64°
180-(90+26)= 64
Answer:
306
Step-by-step explanation:
Take a list of primes and multiply each with the prime+1:
2*3 = 6
3*4 = 12
5*6 = 30
7*8 = 56
11*12 = 132
13*14 = 182
17*18 = 306
