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Illusion [34]
2 years ago
9

Factor x3 – 7x2 – 5x + 35 by grouping. What is the resulting expression?

Mathematics
2 answers:
Aliun [14]2 years ago
7 0

Answer:

(x-7)(x-\sqrt{5})(x+\sqrt{5})

Step-by-step explanation:

The given expression is

x^3-7x^2-5x+35

Factor the first two and the last two.

x^2(x-7)-5(x-7)

(x-7)(x^2-5)

Apply difference of two squares to the leftmost factor.

(x-7)(x-\sqrt{5})(x+\sqrt{5})

Nookie1986 [14]2 years ago
7 0

Answer:

x^3 - 7x^2 - 5x + 35=(x-7)(x-\sqrt{5})(x+\sqrt{5})

Step-by-step explanation:

We are given a expression:

x^3 - 7x^2 - 5x + 35

x^3 - 7x^2 - 5x + 35\\\\=x^2(x-7)-5(x-7)\\\\=(x^2-5)(x-7)

We know that a^2-b^2=(a-b)(a+b)

So, x^2-5=x^2-(\sqrt{5})^2 \\\\=(x-\sqrt{5})(x+\sqrt{5})

So, x^3 - 7x^2 - 5x + 35=(x-7)(x-\sqrt{5})(x+\sqrt{5})

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In terms of mathematics, a statement is simply any sentence in which it can be verifiably true or false. A statement cannot be a subjective opinion. It must be an objective fact and there must not be any ambiguity involved. A conclusion is also a statement that derives from the first statement made.

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2 years ago
what is the volume of a triangular prism that is 75 centimeters long and that has a base with an area of 30 square centimeters
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2 years ago
Write a quadratic function in standard form with zeros 9 and -4
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tim spends 25% of his time at the gym dooing leg exercises , 1/5 on shoulder exercises , 0.35 on biceps exercises , and warming
svetoff [14.1K]

Answer:

20%

Step-by-step explanation:

1/5 of 1 hour = 20 minutes

so 1/5 = 20%

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45% + 35% = 80%

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Hope this helps!

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