ILL GIVE BRAINLIEST ! Need help with algebra. random answers get reported.

Mathematics

2 answers:

Alex_Xolod [135]3 years ago

8 0

Answer:

1.2.4

2. -8

3. -5-3

4.10+12+14

5.-10-3

6. 2+2=4

7.5+3=8

crimeas [40]3 years ago

5 0

1)2.4

2).8

3) -5-3

4)10+12+14

5)-10-3

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I know the answer is C. but I need to know how to solve it!

otez555 [7]

Yes you are right it's C)
Notice that f(-2) = (-2)³ +2( - 2)² + 4(-2) + 8 =0
Then x³+2x²+4x+8 is divisible by (x+2)
Perform this division & you will get:

x³+2x²+4x+8 = (x+2)(x²+4)
The root of (x+2) is the value that render it nil, that is x=-2
The root of (x²+4) are imaginary (not real) because
x²+4 =0 ==> x² = -4 & x=√-4 or x= 2i (nor real).
Hope you understood the reasoning

3 0

3 years ago

For the following relation, find the: a) Reflexive closure b) Symmetric closure c) Transitive closure 2 You may include explanat

Luba_88 [7]

Answer:

Following are the complete solution in the attached file.

Step-by-step explanation: