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KiRa [710]
4 years ago
9

Which of the following is a polynomial with roots: − square root of 5 , square root of 5 , and −3?

Mathematics
1 answer:
tresset_1 [31]4 years ago
4 0
Roots: - √5 , √5, and - 3

=> these are factors of the polynomial: (x + √5), (x - √5), and (x + 3).

Multiply those three factors:

(x + √5) (x - √5) ( x + 3) = [x^2 - 5] ( x + 3 ) = x^2 + 3x^2 - 5x - 15

Therefore the polynomial x^2 + 3x^2 - 5x - 15 is a polynomial with the given roots.

Answer: option B. x^3 + 3x^2 - 5x - 15
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Step-by-step explanation:

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Last month,Margo bought a tree that grows 2.5cm each day.It was 5cm tall when she bought it and now it 65cm tall. Write a equati
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Answer:

The equation to determine the number of days Margo has owned the plant is 5+2.5x=65.

Step-by-step explanation:

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Actual length of the tree = 5 cm

Current length of the tree = 65 cm

Per day growth Rate of plant = 2.5 cm

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Now We can say that,

Current length of the tree is equal to sum of Actual length of the tree and Per day growth Rate of plant multiplied by number of days she owned the plant.

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15 cm

Step-by-step explanation:

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The two cylinders shown in the figure are similar to each other.

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Radius of both the cylinders are 2 cm and 5 cm respectively. Height of the smaller cylinder is 5 cm. Now,

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Doing cross multiply, we get:

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Dividing both sides by 2, we get:

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