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irinina [24]
3 years ago
5

Which are factors of x2 – 4x – 5?

Mathematics
1 answer:
Kitty [74]3 years ago
7 0

Answer:

(x-5)(x+1)

Step-by-step explanation:

Since the highest power of x is 2, u can assume the equation to be (x +/- A) (x +/- B), whereby A and B are unknowns.

Since the coefficient of X^2 is 1, and the number in the equation is - 5, the only possible values for A and B to get - 5 is either - 5 and 1 or 1 and - 5.

Since coefficient of x is - 4 and number in equation is - 5, imagine inserting those numbers in the equation and cross multiplying back. You would realise that the answer should be as listed above.

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30 points plus brainliest if you get it right with step by step explanation.
Leto [7]

Answer:

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8 0
3 years ago
Find the volume<br> If the rectangular prism of this 3m,11m,3m and what is the answer
sveta [45]

Answer:

99 m³

Step-by-step explanation:

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4 0
3 years ago
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4 0
3 years ago
A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze, and the second brand is 90% pure anti
Murrr4er [49]

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y = amount of 90% antifreeze

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To obtain 120 gal of 80% antifreeze solution (which contains 0.80•120 = 96 gal of pure antifreeze), we must have

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Solve for y :

y = 120 - 48

y = 72

6 0
2 years ago
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