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3 years ago

Given the expression below, which is the best process for simplifying the expression?

2 answers:

7 0

The best and most correct answer among the choices provided by your question is the first choice or letter A,

The best process for simplifying the expression is: <span>combine like terms, distribute the radicals; simplify the radicals.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

pashok25 [27]3 years ago

3 0

Answer:

distribute the radicals, simplify the radicals, combine like terms

Step-by-step explanation:

(-5sqrt[2]-sqrt[6])(sqrt[3]+2sqrt[2])

$(-5\sqrt{2})-\sqrt{6} )(\sqrt{3} +2\sqrt{2} )$

To multiply it , we apply FOIL method

Distribute the radicals inside the second parenthesis

After distributing the radicals inside the second parenthesis we multiply and simplify the radical as much as we can

Then we combine like terms to simplify further

distribute the radicals, simplify the radicals, combine like terms

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It’s c :) I did the test just trust me

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3 years ago

What is a simplified expression for (+)−(+)?

mariarad [96]

Answer: - Just a minus sign

Subtracting a positive is subtraction.

<h3>The - changes the second (+) to a negativ </h3>

Step-by-step explanation:

Perhaps tthe point of this question would br to contrast it with

(+)-(-) becomes +

<h3>That would be Subtracting a negative changes to addition.</h3>

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3 years ago

Solve the Method of variation of Parameters. y" - 3y' + 2y = 4e^3t

kirill [66]

Answer:

CF+PI= $c_1e^{2x}+c_2e^{x}$ + $2e^{3t}$

Step-by-step explanation:

we have given y"-3y'=2y= $4e^{3t}$

this differential equation solution have two part that CF and PI

CALCULATION OF CF :

$m^2-3m+2=0$

$m^2-2m-m+2=0$

$(m-1)(m-2)=0$

m=1 and m=2

so CF= $c_1e^{2x}+c_2e^{x}$

CALCULATION OF PI :

PI = $\frac{4e^{3t}}{(m-1)(m-2)}$

at m= 3 in PI

$PI=\frac{4e^{3t}}{2}=2e^{3t}$

so the complete solution is

CF+PI= $c_1e^{2x}+c_2e^{x}$ + $2e^{3t}$

7 0

3 years ago

The rectangle below has an area of 70 square meters.

nasty-shy [4]

Answer:

The side lengths are 10 by 7

Step-by-step explanation:

The area of a rectangle is

A = l*w

70 = (x - 11)(x - 8)

FOIL

70 = x^2 -8x-11x+88

Combine like terms

70 = x^2 -19x +88

Subtract 70 from each side

0 = x^2 -19x +88-70

0 = x^2 -19x+18

Factor

What number multiplies to 18 and adds to -19

-18*-1 =18

-18-1 = -19

0=(x-18)(x-1)

Using the zero product property

x-18=0 x-1=0

x=18 x=1

But x cannot x=1 because then the side lengths would be negative

x-18 = 10

x-11 = 7

The side lengths are 10 by 7

4 0

3 years ago

Which is the correct cofunction identity for cos theta

makvit [3.9K]

Answer:

C. sin(90° - θ)

Step-by-step explanation:

A trig function of an angle equals the cofunction of the angle's complement.

The cofunction of cosine is sine, and the complement of θ is 90° - θ.

∴ cosθ = sin(90° - θ)

8 0

3 years ago

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