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Dima020 [189]
3 years ago
14

Find the product of (5x+4)(5x-4)

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0

Answer:

25x² - 16

Step-by-step explanation:

Given

(5x + 4)(5x - 4)

Each term in the second factor is multiplied by each term in the first factor, that is

5x(5x - 4) + 4(5x - 4) ← distribute parenthesis

= 25x² - 20x + 20x - 16 ← collect like terms

= 25x² - 16

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Keep: 7/12

Change: ÷ into ×

Flip: 2/5 into 5/2

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Step-by-step explanation:

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b=5.2

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c is the hypotenuse of the triangle

Now Finding the perimeter of base:

The perimeter of the base=sum of the lengths of sides.

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total surface area of prism:

TSA= ph + 2A

where h is height of prism = 10

TSA= 26.2(10) + 2(39)

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Hence total surface area of the given prism is 340 units square!

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