2 years ago

Find the exact value of the expressions

Mathematics

1 answer:

timama [110]2 years ago

4 0

Answer:

here is your correct answer and listen question no four option are incorrect

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What are the solutions of the equation x6 + 6x3 + 5 = 0? Use factoring to solve. mc017-1.jpg and x = 1 mc017-2.jpg and x = –1 mc

Wittaler [7]

We are given equation : $x^6+6x^3+5=0$

$Use\:the\:rational\:root\:theorem$

$\mathrm{Therefore,\:we\:need\:to\:check\:the\:following\:rational\:numbers:\quad }\pm \frac{1,\:5}{1}$

$-\frac{1}{1}\mathrm{\:is\:a\:root\:of\:the\:expression,\:so\:factor\:out\:}x+1$

$\mathrm{Compute\:}\frac{x^6+6x^3+5}{x+1}\mathrm{\:to\:get\:the\:rest\:of\:the\:eqution:\quad }x^5-x^4+x^3+5x^2-5x+5$

Therefore, final factored form it

$x^6\:+\:6x^3\:+\:5=\left(x+1\right)\left(x^5-x^4+x^3+5x^2-5x+5\right)$

We can't factor it more.

Therefore,

x+1=0.

x=-1.

Therefore, the real solution of the equation would be -1.

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3 years ago

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Question 14 of 20 :

LenKa [72]

Where is the graph for

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Write a mixed number that is equivalent to 16\3

Veseljchak [2.6K]

A mixed number that is equivalent to 16/3 is

5 1/3

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The minimum of the graph of a quadratic function is located at (–1, 2). The point (2, 20) is also on the parabola. Which functio

ss7ja [257]

The min or max of a parabola/quadratic function is the vertex

for
y=a(x-h)²+k
the vertex is (h,k)

so
vertex/min is at (-1,2)
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y=a(x-(-1))²+2
y=a(x+1)²+2
find a
given, (2,20) is on the graph

20=a(2+1)²+2
20=a(3)²+2
20=9a+2
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y=2(x+1)²+2 is da equation

3rd one
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2 years ago

PLEASE HELP! What is the value of x in the equation below?

Svetlanka [38]

Answer:

C. 20

Step-by-step explanation:

We have to isolate x.

6(x - 8) = 72

Distribute 6.

6x - 48 = 72

Add 48 to both sides.

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Divide both sides by 6.

x = 20

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