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g100num [7]
2 years ago
9

NEED HELP NOW PLEASEEE, what algebraic expression must be added to the sum of 3x^2+4x+8 and 2x^2-6x+to give 9x^2-2x-5

Mathematics
1 answer:
Annette [7]2 years ago
4 0

Answer:

4x^2-13

Step-by-step explanation:

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What are the zeros of the function f(x) = x2 + 8x +4, expressed in simplest radical form?
Elanso [62]

Answer:

x = - 4 ± 2\sqrt{3}

Step-by-step explanation:

Given

f(x) = x² + 8x + 4

To find the zeros let f(x) = 0, that is

x² + 8x + 4 = 0 ( subtract 4 from both sides )

x² + 8x = - 4

To solve using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(4)x + 16 = - 4 + 16

(x + 4)² = 12 ( take the square root of both sides )

x + 4 = ± \sqrt{12} = ± 2\sqrt{3} ( subtract 4 from both sides )

x = - 4 ± 2\sqrt{3}

Thus the zeros are

x = - 4 - 2\sqrt{3} and x = - 4 + 2\sqrt{3}

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3 years ago
Which statement BEST describes the graph of f(x - 6)?
Alex

Answer:

B. f(x) is shifted left by 6 units

Step-by-step explanation:

when we talk about translations, we know they happen along the X axis, y axis or sometimes both, in this case we see that were subtracting x by six units, so we are moving left along the x axis

ways to remember this is:

 -you count up x the RIGHT way going right

 -you count UP y

and of cource by process of ellimination we know that decreasing X goes left and decreasing y goes down

ALSO NOTE: x always goes horizontally and y always goes vertically

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Give a counterexample to disprove the statement "all squares are congruent"
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Give a counterexample to disprove the statement all squares are congruent
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What is the slope of y=17x+43
goldenfox [79]
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5 0
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Read 2 more answers
Logic You find that the product of 93 and 6 is 558. He can you use addition to check your answer ? How can you use division yo c
frozen [14]
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and division can be used to check your answer since it's the inverse operation of multiplication...take your solution of 558 and divide it by 6 (or 93) to see if 93 times six equals 558
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3 years ago
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