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monitta
2 years ago
5

Simplify the following completely and show your work: -5x2(2x2 - 4x - 12)

Mathematics
1 answer:
masya89 [10]2 years ago
8 0

Answer:

80+40x

Step-by-step explanation:

-5x2(2x2-4x-12)

-10(2x2-4x-12)

-20-20+40x+120

-40+120+40x

80+40x

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It is: THE SUM OF THREE CONSECUTIVE NUMBERS IS 78 WHAT IS THE SMALLEST OF THREE NUMBERS?
TiliK225 [7]
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Define x :
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Let the smallest number be x.
The other two numbers will be x+1 and x+2.

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Construct equation :
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The sum of all 3 numbers is 78
⇒ x + x + 1 + x + 2 = 78

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Solve x :
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x + x + 1 + x + 2 = 78
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x = 25

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Answer: Smallest number = 25
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