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Over [174]
3 years ago
6

What is the factored form of this expression? x2 + 6x − 16

Mathematics
2 answers:
Norma-Jean [14]3 years ago
7 0

Answer:

(x + 2)(x - 8)

Step-by-step explanation:

I did this by using the AC method. The AC method of factoring is basically a method to split the middle term bx into 2 separate terms so that you can eventually factor the trinomial using grouping. In order to split the middle term we will need to find the factors that make up the product of the coefficient A and C

Pavel [41]3 years ago
6 0

Answer:

(x-2) (x+8)

Step-by-step explanation:

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What is x?<br><br> 3x - 4 + 1 = - 2x - 5 + 5x
ehidna [41]
3x - 4 + 1 = -2x - 5 + 5x

First, simplify 3x - 4 + 1 to 3x - 3. / Your problem should look like: 3x - 3 = -3x - 5 + 5x
Second, simplify -2x - 5 + 5x to 3x - 5. / Your problem should look like: 3x - 3 = 3x - 5
Third, cancel 3x on both sides. / Your problem should look like: -3 = -5
Fourth, since -3 = -5 is false, there is no solution.

Answer: No solution

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3 years ago
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In the third degree polynomial function f(x) =x^3 + 4x, why are 2i and -2i zeros?
IgorC [24]

Answer:

We just need to evaluate and get f(2i)=0, f(-2i)=0.

Step-by-step explanation:

Since i^2=-1, then i^3=i^2i=-i, and we can apply this when we evaluate f(x) =x^3 + 4x for 2i and -2i.

First we have:

f(2i) =(2i)^3 + 4(2i)=2^3i^3+8i=8(-i)+8i=0

Which shows that 2i is a zero of f(x).

Then we have:

f(-2i) =(-2i)^3 + 4(-2i)=(-2)^3i^3-8i=-8(-i)-8i=8i-8i=0

Which shows that -2i is a zero of f(x).

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3 years ago
I need to know how to solve this equation for x
mel-nik [20]
I hope this helps. X is equal to 4 and -9

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3 years ago
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stellarik [79]

Answer:

B. 4 and 6 in

Step-by-step explanation:

The triangle inequality rule states: the length of a side of a triangle is less than the sum of the lengths of the other two sides and greater than the difference of the lengths of the other two sides.

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zhenek [66]

Answer:

9

Step-by-step explanation:

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2 years ago
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