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3 years ago

13. Describe and correct the error in finding the product.

Mathematics

1 answer:

Blizzard [7]3 years ago

4 0

Answer:

Answer:

x=−1.27794

Step-by-step explanation:

x(x−5)2=x2−52

x3−10x2+25x=x2−52

Step 1: Subtract x^2-52 from both sides.

x3−10x2+25x−(x2−52)=x2−52−(x2−52)

x3−11x2+25x+52=0

Step 2: Use cubic formula.

x=−1.27794

Hope it helps +_+

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Answer:

either of Step 3 or Step 4

Step-by-step explanation:

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Answering "why" someone does something is always tricky. One can project one's own interpretation onto the actions of others, but one never really knows whether that is accurate or not.

The "why" in this case could go back to the motivation of the problem's author, which may be to see if the student can recognize that the opposite of -1 is +1, or that the sum -1-1 is not zero.

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My guess is that Step 3 is considered to be the erroneous step, and that choosing Step 4 will get you into a losing argument with your grader.

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3 years ago

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Answer:

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Step-by-step explanation:

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mote1985 [20]

Step-by-step explanation:

The associative property for multiplication: <em>(a · b) · c = a · (b · c)</em>

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