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1 year ago

It is always helpful to rewrite a quadratic equation in standard form as a first step in solving it.

Mathematics

2 answers:

kotykmax [81]1 year ago

5 0

THE ANSWER IS (B) true

kifflom [539]1 year ago

5 0

Answer:

Step-by-step explanation:

Now when I think of solving it, I think of finding the zeros. Now if you start with the form, for example:

$(x+3)(x-3)$

Then you can easily see the zeros are -3 and 3.

But if you start with the standard form:

$ax^2+bx+c=0\\or\\x^2-9$

It will be harder to find the zeros and you would do the eqation or factor it.

So if your in the factored form don't go to standard to find the zeros.

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3 years ago

A circle is cut from a square piece of cloth, as shown:

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3 years ago

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Sqaure root of 5 (u-1)(u^5+u^4+u^3+u^2+u+1)

Anna71 [15]

GIVEN:

$5(u - 1)( {u}^{5} + {u}^{4} + {u}^{3} + {u}^{2} + u + 1)$

remember:

$\sqrt{u} = {u}^{ \frac{1}{2} }$

And

${u}^{n} \times {u}^{m} = {u}^{n + m}$

SOLVE:

start by multiplying the factors:

$5( ({u}^{6} + {u}^{5} + {u}^{4} + {u}^{3} + {u}^{2} + u ) - ( {u}^{5} + {u}^{4} + {u}^{3} + {u}^{2} + u + 1))$

simplify by combing like terms. Most terms subtract off, leaving:

$5( {u}^{6} - 1)$

This can be factored, but it is not a perfect square, which is really what we need to take the square root.

$5( {u}^{3} - 1)( {u}^{3} + 1)$

I'm not exactly sure what form they want the answer in...

so taking the square root:

$\sqrt{5( {u}^{6} - 1) } = {(5( {u}^{6} - 1))}^{ \frac{1}{2} }$

so my best answer is:

${5}^{ \frac{1}{2} } \times {( {u}^{6} - 1)}^{ \frac{1}{2} }$
or the more factored form:

${5}^{ \frac{1}{2} } { ({u}^{3} - 1)}^{ \frac{1}{2} } { ({u}^{3} + 1 )}^{ \frac{1}{2} }$

I'm not sure how else to solve it. Taking the square root doesn't work out super well, so I left it in the most simple form I could.

sorry for not coming to a definitive answer!

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3 years ago

Color the balloons red is proper fraction blue for improper fraction green for mixed number

scoundrel [369]

Answer:

Red: 3/4

Blue: 9/5, 8/3

Green: 2 8/12, 2 1/2

Step-by-step explanation:

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2 years ago

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