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Mathematics
Londyn Mason
16 January, 00:31
Simplify 7x+42/x^2+13+42
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Oliver Davis
16 January, 00:58
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First you will need to add 13 and 42. Which equals 55. Using the equation a=a/1, convert the expression into a fraction. Where you will get 7x/1+42/x^2+55/1. Expand the fraction to get the least common denominator (X^2•7x/x^2•1 + 42/x^2 + x^2•55/x^2•1). Calculate the product (x^2•7x) = 7x^3. Remember that any expression multiplied by one remains the same (x^2•1) = x^2. Used the commutative property to reorder the terms of (x^2•55) = 55x^2. (7x^3/x^2 + 42/x^2 + 55x^2/x^2)
Then you will write all the numerators above the common denominator.
The answer will be 7x^3+42+55x^2 / x^2
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Selina Cameron
16 January, 02:02
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First let's factor the bottom
= (x+7) (x+6)
So now the equation is 7x+42 / (x+7) (x+6)
Now factor out the 6 on top
7x+42 = 7 (x+6)
Now equation is 7 (x+6) / (x+7) (x+6)
The (x+6) will cancel out and your left with the answer
= 7/x+7
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