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3 years ago

What are the factors of the expression below? -x+2x+35

Mathematics

2 answers:

Serhud [2]3 years ago

6 0

The answer is A

Good luck

gulaghasi [49]3 years ago

5 0

Answer:

Step-by-step explanation:

Given

- x² + 2x + 35 ← factor out - 1 from each term

= - 1 (x² - 2x - 35)

To factor the quadratic inside the parenthesis

Consider the factors of the constant term (- 35) which sum to give the coefficient of the x- term (- 2)

The factors are - 7 and + 5

since - 7 × + 5 = - 35 and - 7 + 5 = - 2, hence

x² - 2x - 35 = (x + 5)(x - 7)

- x² + 2x + 35 = - 1 (x + 5)(x - 7) → A

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Delicious77 [7]

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3 years ago

Find a general solution of y" + 8y' + 16y=0.

Misha Larkins [42]

Answer:

The general solution: $C_{1}e^{-4x} + xC_{2}e^{-4x}$

Step-by-step explanation:

Differential equation: y'' + 8y' + 16y = 0

We have to find the general solution of the above differential equation.

The auxiliary equation for the above equation can be writtwn as:

m² + 8m +16 = 0

We solve the above equation for m.

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$m_{1}$ = -4, $m_{2}$ = -4

Thus we have repeated roots for the auxiliary equation.

Thus, the general solution will be given by:

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2 years ago

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2 years ago

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Step-by-step explanation:

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2 years ago

Read 2 more answers

If figure 1 has 4 tiles, fig 2 has 10, and fig 3 has 16... What is my rule?

FinnZ [79.3K]

Answer:

an = 6n -2

an+1 = an +6

Step-by-step explanation:

to go from 4 to 10 we add 6 tiles

to go from 10 to 16 we add 6 tiles

We add 6 tiles each time

an = a1 + d(n-1) where an is the value of the nth term a1 is the first term d is the common factor and n is the term number

an = 4 + 6( n-1)

an = 4 + 6n -6

an = 6n -2

an+1 = an +6

7 0

2 years ago