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blagie [28]
3 years ago
14

Write a polynomial of least degree with rational coefficients, a leading coefficient of 1, and zeros at 3 and sqr root 7. Expand

your answer and write it in standard form
Mathematics
1 answer:
Tresset [83]3 years ago
6 0

Answer:

(x-3)(x^2-7) = x^3 -3x^2 -7x + 21

just change the sign of the root and put x in front of it, then multiply the factors all together

(x-3)(x-sqr7)(x+sqr7)    roots come in conjugate pairs to eliminate irrational coefficients

(x-sqr7)(x+sqr7) = x^2-7.  similar to (a-b)(a+b) = a^2-b^2

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
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Find GCF of 40 and 120​
vagabundo [1.1K]

Answer:

Hi there!

<h2>Find the GCF of 40 and 120</h2>

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<h3>Hope its help!</h3>
5 0
2 years ago
Lucy places five cards that are labeled 1 to 6 face down on the table and mixes them up. What is the likelihood that her friend
melisa1 [442]

Answer:

1/2 or 0.5

Step-by-step explanation:

Within 1 to 6,

Even numbers are 2, 4, 6

While odd numbers are 1, 3, 5

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4 0
3 years ago
Rewrite in radical form (-243)2/5
nadezda [96]

Answer:

243 and 2 over 5

Multiply

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−486 over 5

Exact Form:

-486 over 5

Decimal Form:

-97.2

Mixed Number Form:

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