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silasjob09
24.12.2019 •
Mathematics
What is the completely factored form of f(x)=6x^3-13x^2-4x+15?
a. (x+1)(6x^2-19x+15)
b. (x+1)^2(2x-3)
c. (x+1)(3x-2)(5x-3)
d. (x+1)(2x-3)(3x-5)
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Ответ:
f(x) = 6x³ - 19x² + 6x² + 15x - 19x + 15
f(x) = 6x² - 19x² + 15x + 6x² - 19x + 15
f(x) = x(6x²) - x(19x) + x(15) + 1(6x²) - 1(19x) + 1(15)
f(x) = x(6x² - 19x + 15) + 1(6x² - 19x + 15)
f(x) = (x + 1)(6x² - 19x + 15)
f(x) = (x + 1)(6x² - 10x - 9x + 15)
f(x) = (x + 1)(2x(3x) - 2x(5) - 3(3x) + 3(5))
f(x) = (x + 1)(2x(3x - 5) - 3(3x - 5))
f(x) = (x + 1)(2x - 3)(3x - 5)
The answer is D.
Ответ:
d.(x+1)(2x-3)(3x-5)
Step-by-step explanation:
Ответ:
Total cost for tiles and paints is $924.
Step-by-step explanation:
We have been given that a community hall is in the shape of a cuboid. The hall is 40m long 15m high and 3m wide.
The paint will be required for 4 walls and ceiling.
Let us find area of walls and ceiling.
Therefore, the area of walls and ceiling is 1410 square meters.
Given: Cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. Therefore,
Therefore, the total painting cost is $564.
Tiles will be required for floor. Let us find the area of floor.
Given: 1m squared floor tiles costs $3. So,
Therefore, the total tiles cost is $360.
Now let us find combined total cost of tiles and paint.
Therefore, the combined total cost of tiles and paint is $924.