3 years ago

What is (pic above)^ expressed in simplified form?

Mathematics

1 answer:

Anit [1.1K]3 years ago

4 0

It would be A

I hope this helps!!

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Find all the zeros of 2x4+x3-14x2-19x-6 two of its zeros are -2 and -1

GalinKa [24]

Answer:

$-2,\ -1,\ -\dfrac{1}{2},\ 3.$

Step-by-step explanation:

Consider polynomial $2x^4+x^3-14x^2-19x-6.$

If x=-2 is its zero, then you can divide the polynomial $2x^4+x^3-14x^2-19x-6$ by $x+2$ and get

$2x^4+x^3-14x^2-19x-6=(x+2)(2x^3-3x^2-8x-3).$

If x=-1, then the polynomial $2x^4+x^3-14x^2-19x-6$ can be rewritten as

$2x^4+x^3-14x^2-19x-6=(x+2)(x+1)(2x^2-5x-3).$

The quadratic polynomial has roots

$x_{1,2}=\dfrac{-(-5)\pm\sqrt{(-5)^2-4\cdot2\cdot(-3)}}{2\cdot 2}=\dfrac{5\pm \sqrt{25+24}}{4}=\dfrac{5\pm \sqrt{49}}{4}=3,-\dfrac{1}{2}.$

Then the polynomial $2x^4+x^3-14x^2-19x-6$ has zeros $-2,\ -1,\ -\dfrac{1}{2},\ 3.$

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3 years ago

What is the difference in the place value between the 2 in 324 and the 2 in 0.324?

irina1246 [14]

324
2 = Tens

0.324
0.02 = Hundredths

20 - 0.02 = 19.98

i am a mathematics teacher. if anything to ask please pm me

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3 years ago

The number 3.14 is a rounded value of the mathematical quantity π. If you replace 3.14 with π, what is the exact formula for the

Novay_Z [31]

the radius = 3.14*2r= 6.28r.i got this answer from user

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4 years ago

4(5-2x)+3=7 step by step pls

trasher [3.6K]

Answer: x = 2

The step by step is attached to this answer, hope it helped!

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3 years ago

Simplified the expression y(y2 - y + 4)

Reptile [31]

Answer:

y^3 -y^2 +4y

Step-by-step explanation:

y(y2 - y + 4)

Distribute

y^3 -y^2 +4y

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3 years ago