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AlladinOne [14]
2 years ago
10

Which of the following are roots of the polynomial function?

Mathematics
1 answer:
Bingel [31]2 years ago
6 0

Answer:

1 and -5

Step-by-step explanation:

~~~~~x^3+3x^2-9x+5=0\\\\\implies x^3-x^2+4x^2-4x-5x+5=0\\\\\implies x^2(x-1)+4x(x-1)-5(x-1)=0\\\\\implies (x-1)(x^2 +4x -5) = 0\\\\\implies (x-1)(x^2+5x -x -5) = 0\\\\\implies (x-1)[x(x+5) -(x+5)] =0\\\\\implies (x-1)(x-1)(x+5)= 0\\\\\implies (x-1)^2(x+5) = 0\\\\\implies x = 1,~~ x = -5

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Step-by-step explanation:

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3 years ago
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Which of the following is not a correct statement or outcome for multiplying matrices?
Thepotemich [5.8K]

Answer:

  neither

Step-by-step explanation:

<em>Both statements are correct.</em>

If matrix 1 has dimensions (r1, c1) and matrix 2 has dimensions (r2, c2), their product can be formed if c1 = r2. The resulting product matrix will have dimensions (r1, c2).

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3 years ago
Can someone please help me
Bad White [126]

Answer:

<h2>L.A. = 384 cm²</h2><h2>S.A. = 640 cm²</h2>

Step-by-step explanation:

Lateral Area:

We have four congruent triangles with base b = 16cm and height h = 12cm.

The formula of an area of a traingle:

A_\triangle=\dfrac{bh}{2}

Substitute:

A_\triangle=\dfrac{(16)(12)}{2}=(8)(12)=96\ cm^2

L.A.=4A_\triangle=4(96)=384\ cm^2

Surface Area:

S.A.=B+L.A.

In the base we have the square with side s = 16cm. The formula of an area of a square:

A_\square=s^2

Substitute:

B=16^2=256\ cm^2

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4 0
3 years ago
Which is the solution to the following equation? -4x + 4 - 2X = -2(3x - 2)
earnstyle [38]

Answer:

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Step-by-step explanation:

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3 years ago
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VikaD [51]

Answer:

64

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Step-by-step explanation:

<em>Order of Operations</em>

<em>Parenthesis</em>

<em>Exponent</em>

<em>Multiply</em>

<em>Divide</em>

<em>Add</em>

<em>Subtract</em>

<em>First, do exponent.</em>

<em>4^3=4*4*4=64</em>

<em>Standard form of 64 is: 60+4</em>

<em>64 is the correct answer.</em>

<em>60+4 is the correct answer.</em>

6 0
3 years ago
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