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blondinia [14]
4 years ago
7

(x -1) = 26 = -4x A. -7 5/7 B. 8 C. -7 D. -5

Mathematics
1 answer:
Volgvan4 years ago
4 0
Based on the answer choices, we suspect you intend
.. (x -1) +26 = -4x

This simplifies to
.. x +25 = -4x
.. 25 = -5x . . . . . subtract x
.. -5 = x . . . . . . . divide by the coefficient of x

Selection D appears to be appropriate for the question we think you asked.
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\\ \sf\longmapsto 21x=80

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The derivative of (x^2 +1)(x^3+ 1) (by definition and basic rule)
dlinn [17]

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Step-by-step explanation:

To find the derivative of this equation we can do two things.

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it might be clearer when I show you:

f(x) = (x^2 + 1)(x^3 + 1)\\f'(x) = (2x)(x^3 + 1) + (x^2 + 1)(3x^2)\\Simplify:\\f'(x) = 2x^4 + 2x + 3x^4 + 3x^2 = 5x^4 + 3x^2 + 2x\\

If you are not familiar with this rule you can first write out the function and then use the basic rule:

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If you need any further help please say so in the comments! I hope this helps! If the steps seem complicated, I suggest you could revise expanding brackets (the first step of the second method) and the basic rules of deriving, but feel free to reach out if you struggle afterwards still

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