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lianna [129]
3 years ago
8

What is the factored form of these expressions?

Mathematics
2 answers:
vodka [1.7K]3 years ago
8 0
<span>To factor out the expressions, we need to find two integers where the sum is equal to the coefficient of the second term and the product of the integers is equal to the constant.
1. d2 + 18d + 81
x1 = 9 : x2 = 9
9+9 = 18
9x9 = 81

</span><span>(d + 9)2
</span>
<span>2. d2 + 22d + 121
</span><span>x1 = 11 : x2 = 11
11+11 = 22
11x11 = 121

</span>(d + 11)2<span>

</span>3. r2 – 49
x1 = -7 : x2 = 7
-7 + 7 = 0
-7x7 = -49

<span>(r – 7)(r + 7)</span>

gladu [14]3 years ago
4 0

Answer:

Step-by-step explanation:

1. d2 + 18d + 81

x1 = 9 : x2 = 9

9+9 = 18

9x9 = 81

(d + 9)2

2. d2 + 22d + 121

x1 = 11 : x2 = 11

11+11 = 22

11x11 = 121

(d + 11)2

3. r2 – 49

x1 = -7 : x2 = 7

-7 + 7 = 0

-7x7 = -49

(r – 7)(r + 7)

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PIT_PIT [208]

Answer:

The equation is an differential equation of second order.

The dependent variable is x, while t is the independent variable.

Step-by-step explanation:

The order of the equation depends on the greatest grade of the derivative, in this case it's the second derivative (x'')

Since x is a function of t, we would have that t is the independent variable while x is the dependent variable.

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Which answer describes the transformation of f(x)=x^2−1 to g(x)=(x+4)^2−1
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What conclusions can be drawn about finding the quotient in scientific notation? Check all that apply. Start Fraction (9.6 times
Nadusha1986 [10]

The quotient of the expressions (9.6 x 10⁻⁸) and (3.2 x 10⁴) is 3.0 × 10⁻¹². Then the correct option is D.

<h3>What is division?</h3>

Division means the separation of something into different parts, sharing of something among different people, places, etc.

The expressions are given below.

(9.6 x 10⁻⁸) and (3.2 x 10⁴)

Then the quotient of the expressions will be

⇒ (9.6 x 10⁻⁸) / (3.2 x 10⁴)

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⇒ 3 x 10⁻⁸ x 10⁻⁴

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Then the correct option is D.

More about the division link is given below.

brainly.com/question/369266

#SPJ1

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