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3 years ago

Given 2x2 = -8, x is

Mathematics

1 answer:

Diano4ka-milaya [45]3 years ago

4 0

Answer:

The answer is x = 2 or x = -2

Step-by-step explanation:

2x² = - 8

Send 8 to the left side of the equation

That is

2x² - 8 = 0

Simplify the expression

Divide both terms by 2

That's

2x² /2 - 8 /2 = 0

x² - 4 = 0

Factorize the expression

that's

(x +2) (x - 2) = 0

x + 2 = 0 x -2 =0

x = -2 x = 2

Therefore x = 2 or x = -2

Hope this helps you

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Answer:

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Step-by-step explanation:

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3 years ago

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ahrayia [7]

Answer:

The perimeter of the rectangle is $P(x) = (4x^{2} + 8x + 8)$

Step-by-step explanation:

Length of the rectangle = $2x^{2} +3x + 1$

Width of the rectangle = x + 3

The Perimeter of the Rectangle = 2 (Length + Width)

So, here the perimeter = $2((2x^{2} + 3x +1 )+(x+3)) = 2 (2x^{2} + 3x + 1 + x +3)\\= 2(2x^{2} + 4x+4) = 4x^{2} + 8x + 8$

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4 years ago

3 + (-2) pls tell me answer and how to solve it

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Answer:

3 + (-2)

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hope this helps

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3 years ago

The train at the zoo holds 36 people. Each row of seats in the train holds 4 people. How many rows of seats are there in the tra

charle [14.2K]

The answer is 9 because 4x9 is 36

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2 years ago

A sphere has a volume of approximately 24,416.64 cubic inches (using 3.14 for π).

TEA [102]

Answer:

The diameter of the sphere is = 36 in.

Step-by-step explanation:

V = 4π r^3/3

24416.64 = (4(3.14) r^3)/3

73249.92 = 12.56 r^3

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diameter = 36 in.

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3 years ago