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EleoNora [17]
3 years ago
9

Is algebra.

Mathematics
2 answers:
alexgriva [62]3 years ago
8 0

Answer:

x = -11/7

x = 11/7

Step-by-step explanation:

49x² - 121

Factor

(7x + 11)(7x - 11)

roots

x = -11/7

x = 11/7

lys-0071 [83]3 years ago
7 0
I’m not sure sorry but I hope you find an answer. I want to let you know that you are loved and appreciated. You got this!
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Subtract rational expression. <br> Show work please.
yan [13]

Given:

$\frac{x+4}{x-1}-\frac{5}{x^{2}-1}

To find:

The simplified rational expression by subtraction.

Solution:

Let us factor x^2-1. It can be written as x^2-1^2.

x^2-1^2=(x-1)(x+1) using algebraic identity.

$\frac{x+4}{x-1}-\frac{5}{x^{2}-1}=\frac{x+4}{x-1}-\frac{5}{(x+1)(x-1)}

LCM of x-1,(x+1)(x-1)=(x+1)(x-1)

Make the denominators same using LCM.

Multiply and divide the first term by (x + 1) to make the denominator same.

                        $=\frac{(x+4)(x+1)}{(x-1)(x+1)}-\frac{5}{(x-1)(x+1)}

Now, denominators are same, you can subtract the fractions.

                        $=\frac{(x+4)(x+1)-5}{(x-1)(x+1)}

Expand (x+4)(x+1)-5.

                        $=\frac{x^2+4x+x+4-5}{(x-1)(x+1)}

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$\frac{x+4}{x-1}-\frac{5}{x^{2}-1}=\frac{x^{2}+5 x-1}{(x-1)(x+1)}

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3 years ago
Multiply.write product as a mixed number.
MakcuM [25]

Answer: 12x5

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