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inn [45]
3 years ago
8

Find the difference of(ab+8a+1)-(-6ab+4)

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
8 0
Hey there!

When finding the difference of expressions like these, there's a few things you should keep in mind. 

1. When finding the difference of two polynomials, multiply the polynomial that implied to be "negative" by –1 to expand the problem and make it easier to solve. 

2. You combine terms based on their unknown terms, like x, y, x², ab, etc. You cannot combine the terms x and x², but you can combine the terms 6b and 8b by adding them. 

3. You can rearrange your terms however you see fit. If a polynomial is implied as "positive", you can multiply that entire polynomial by +1 to get rid of the parentheses. 

With all that in mind, you can go ahead and solve for your difference, like so:

(ab+8a+1)-(-6ab+4)

(ab+8a+1) (-1(-6ab+4))

(ab+8a+1) + (6ab-4)

ab+6ab+8a+1-4

7ab+8a-3

7ab+8a-3 will be your difference. 

Hope this helped you out! :-)
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<em><u>17: 480</u></em>

(We first arrange all of the candidates except b in a line. This can be done in 5! ways. We now add b to the line. Since we now want to count the arrangements where b is positioned next to a, there are two possibilities for the position of b. (Either left of a or right of a).

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Answer: yes, she did made an error, a very big mistake.

Step-by-step explanation:

first, we have varieties of ways in which we can use to solve this, the most important thing is to stick to the mathematical rules of solving any equations.

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collect like ter

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secondly, using the method she is intending to use, its more easier to subtract 6x from bothside

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