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Sergeeva-Olga [200]
3 years ago
13

Write the expression in factored form. m^4 - n^2

Mathematics
2 answers:
tester [92]3 years ago
8 0
m^4-n^2=(m^2-n)(m^2+n)
JulsSmile [24]3 years ago
8 0
(m^2+n)(m^2-n) is the factored form.
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I need to know how to simplify these problems.
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You need to factor the radicals into products of radicals, and when factoring you should keep in mind you want to obtain perfect square roots. So √125 = √5*√25 and squareroot 25 has a definite answer of 5, so ∛125=∛5×∛25=5×√5. You want to follow the general pattern of factoring perfect squares to obtain a number outside the radical which can be multiplied by the current coefficient
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Solve the following system using a matrix.<br><br> 7a - b = -1<br> -4a - 2b = -2
Assoli18 [71]

1. <u><em>a=-1+b/7 is the right answer.</em></u>    First you had to add by b from both sides of equation, and it gave us, 7a-b+b=-1+b. And then simplify, and it gave us, 7a=-1+b. Divide by 7 from both sides of equation, and it gave us, \frac{7a}{7}=-\frac{1}{7}+ \frac{b}{7}. Finally simplify, and it gave us the answer is a=-1+b/7 is the right answer.

________________________________________________________

2. <em><u>a=-b-1/2 is the right answer.</u></em>     First you had to add by 2b from both sides of equation, and it gave us, -4a-2b+2b=-2+2b. And then simplify, and it gave us, -4a=-2+2b. Next you can also divide by -4 from both sides of equation, and it gave us, \frac{-4a}{-4}=-\frac{2}{-4}+\frac{2b}{-4}. Finally simplify, and it gave us the answer is a=-b-1/2 is the right answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie

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3 0
3 years ago
Read 2 more answers
Alexandra uses 12 cups of water and 6 cups of dry rice to make 18 cups of cooked rice. Today, she wants to make 4 cups of cooked
LekaFEV [45]

The proportion that Alexandra can use to find r is 9 cups of water and 4 cups of dry rice

If Alexandra uses 12 cups of water and 6 cups of dry rice to make 18 cups of cooked rice, this can be expressed as:

\frac{12}{6} = 18cups

To get the proportion "r" for the amount of dry rice to use to make 4 cups of cooked rice, we can write:

r = 4 cups

Divide both expressions:

\dfrac{\frac{12}{6} }{\frac{a}{b} } =\frac{18}{4}\\\dfrac{12b}{6a}=  \frac{18}{4}\\\dfrac{2b}{a} =\frac{18}{4}\\\frac{b}{a} =\frac{18}{8}\\\frac{b}{a}  =\frac{9}{4} =r

Hence the proportion that Alexandra can use to find r is 9 cups of water and 4 cups of dry rice

Learn more on proportions here: brainly.com/question/19994681

7 0
3 years ago
Use the Parabola tool to graph the quadratic function.<br> f(x) = 2x2 + 16x + 31
zvonat [6]
I used a app, I also assumed that the “2x2” of the equation meant 2x^2

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