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Misha Larkins [42]
3 years ago
10

Factor completely

Mathematics
2 answers:
svet-max [94.6K]3 years ago
8 0

Answer:

B.) 2(5x-4)(x+1)

Step-by-step explanation:

10x^2+2x-8

= 2(5x^2 + x - 4)

= 2(5x^2 + 5x - 4x - 4)

= 2[5x(x + 1) - 4(x + 1)]

= 2(5x-4)(x+1)

Vera_Pavlovna [14]3 years ago
5 0

Answer:

B.)  2(5x - 4)(x + 1).

Step-by-step explanation:

10x^2+2x-8

First divide by  the common factor 2:

= 2(5x^2 + x - 4)

Now  we factor the expression in the parentheses using the 'ac' method.

5 * -4 = -20   so to get the  + x in the middle  we need 5x - 4x:

= 2 ( 5x^2 + 5x - 4x - 4)

= 2[ 5x(x + 1) - 4(x + 1)]

= 2(5x - 4)(x + 1)  (answer).

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3 years ago
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Solve by elimination using subtraction.<br> 2x + y = -5<br> 2x - 5y = 13
spayn [35]

Answer:

(- 1, - 3 )

Step-by-step explanation:

Given the 2 equations

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3 years ago
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A triangle is removed from the rectangle. Find the area of the remaining figure.
Mariulka [41]

Answer

C) 160 in^2


Step by step explanation

First, let's find the area of the rectangle.

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The area of the rectangle = 20 * 10

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Area of a triangle = 1/2 base * height.

Here base = 10 and height = 8. Plug in these values into the formula, we get

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The area of the triangle = 40 in^2

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The answer is "160 in^2"

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Step-by-step explanation:

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Step-by-step explanation:

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