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ryzh [129]
3 years ago
6

Factor completely. x^4-11x^2+28

Mathematics
2 answers:
marissa [1.9K]3 years ago
8 0

Answer:

x⁴ - 11x² + 28

= x⁴ - 4x² - 7x² + 28

= x²(x² - 4) - 7(x² - 4)

= (x² - 7)(x² - 4)

= (x -   \sqrt{7} )(x +  \sqrt{7} )(x - 2)(x  + 2)

Gala2k [10]3 years ago
4 0
Ok umm I think

x^4 - 11x^2 + 28
Write - 11x^2 as a difference
x^4 - 4x^2 - 7x^2 + 28
Factor out x^2 from the expression
x^2 x (x^2 - 4) - 7x^2 + 28
Factor out - 7 from the expression
x^2 x (x^2 - 4) - 7 (x^2 - 4)
Factor out x^2 - 4 from the expression
(x^2 - 4) x (x^2 - 7)
Use a^2 - b^2= (a-b)(a+b) to factor the expression
(x-2) x (x + 2) x (x^2 - 7)
And that’s how it’s (x-2) x (x + 2) x (x^2 - 7) ..... yea and .-.
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Answer:

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Step-by-step explanation:

Hello!

Given the options:

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b= \frac{Y_2-Y_1}{X_2-X_1}= \frac{1.5-1}{1-0} = \frac{0.5}{1}= \frac{1}{2}

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3 years ago
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72 The length of a side of a triangle is 36. A line parallel to that side divides the triangle into two parts of equal area. Fin
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Answer:

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