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Firdavs [7]
4 years ago
5

Multiply. 3x2 - 7x +4 5x2 + 2x

Mathematics
1 answer:
Neporo4naja [7]4 years ago
8 0

Answer:15x^4-29x^3+6x^2+8x

Step-by-step explanation:

(3x^2-7x+4)(5x^2+2x)

Open brackets

15x^4+6x^3-35x^3-14x^2+20x^2+8x

Add or subtract like terms

15x^4-29x^3+6x^2+8x

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Step-by-step explanation:

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Margo drove for 3.85 hours at an average speed of 61.4 miles per hour. Estimate the total distance that she drove. Explain your
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It is 236.39. Explanation if Margo is driving 61.4 miles per hour he will go that many miles an hour, tip (don't think of it as speed in math). If 3.85 hours pass multiply that against 61.4 miles an hour. Getting you 236.39. Here is an explanation. His amount of distance he covers per hour is 61.4 so every hour that number adds up and to get this just multiply against 3.85 hours. Do you get it now?
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A scale has a percent error of 5%. The actual mass of a rock is 258 g. Select from the drop-down menus to correctly complete the
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4 0
4 years ago
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If f(x)= 2x^3-12x^2+20x-16 and f(4)= 0, then find all the zeros of f(x) algebraically
Sonja [21]

Answer:

  • x = 4 is the only real zero

Step-by-step explanation:

<u>Find the zero's of f(x)</u>

  • 2x³ - 12x² + 20x - 16 = 0
  • x³ - 6x² + 10x  - 8 = 0
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2 years ago
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