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Murrr4er [49]
3 years ago
14

What is the factored form of x2 - 4x - 5?

Mathematics
2 answers:
Kazeer [188]3 years ago
6 0

Answer:

Option D, (x - 5)(x + 1)

Step-by-step explanation:

<u>Step 1:  Factor </u>

x^2 - 4x - 5

x^2 - 5x + x - 5

(x - 5)(x + 1)

Answer:  Option D, (x - 5)(x + 1)

Vlad [161]3 years ago
6 0

Answer:

(x-5) (x+1)

Step-by-step explanation:

x^2 -4x -5

What two numbers multiply to -5 and add to -4

-5*1 = -5

-5+1 = -4

(x-5) (x+1)

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The decimal expansion of all rationals will be
aleksklad [387]

Answer:

I'm pretty sure they either terminate after so many digits (end) or repeat a certain pattern of numbers.

Step-by-step explanation:

The first will look like this: 432.2340

The second would look like this: 324.234234234... ("234" would keep repeating over and over and over. And can be any sequence of #'s)

^Random numbers were used as examples^

5 0
3 years ago
Sample Work Help Needed! Please answer these questions and show the steps used to solve them. NO DECIMAL ANSWERS (except on thre
anygoal [31]

1. Using the exponent rule (a^b)·(a^c) = a^(b+c) ...

\left(-2x^3y^4\right)\left(5x^9y^{-2}\right)=(-2)(5)\left(x^{(3+9)}y^{(4-2)}\right)\\\\=-10x^{12}y^{2}

Simplify. Write in Scientific Notation

2. You know that 256 = 2.56·100 = 2.56·10². After that, we use the same rule for exponents as above.

8 \left(32\times 10^{11}\right)=(8)(32)\times 10^{11}=256\times 10^{11}=2.56\times 10^{13}

3. The distributive property is useful for this.

(3x – 1)(5x + 4) = (3x)(5x + 4) – 1(5x + 4)

... = 15x² +12x – 5x –4

... = 15x² +7x -4

4. Look for factors of 8·(-3) = -24 that add to give 2, the x-coefficient.

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The last pair of factors adds to give 2. Now we can write

... (8x -4)(8x +6)/8 . . . . . where each of the instances of 8 is an instance of the coefficient of x² in the original expression. Factoring 4 from the first factor and 2 from the second factor gives

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8 0
3 years ago
Which one is the greatest 2/5, 0.35 or 0.3
Tema [17]
0.35 is the answer of the questions
5 0
3 years ago
Giving brainlyist to the first person to answer with a complete and correct answer.
julsineya [31]

Hi There!

Given:

  • A placemat requires 30 feet of ribbon
  • Mandy has 200 feet of ribbon

To Find:

How many placemats can Mandy make, if she has 200 ft of ribbon?

Solve:

200÷30≈7

Thus, she can make 7 placemats.

<h3>Hope it helps & enjoy your day!</h3>

\huge\textbf{TheStarryNights}

3 0
2 years ago
Read 2 more answers
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