By Mary Jane Sterling
I wanted a short refresher simply because i'm activity looking and this occasionally comes up on interviews because of my profession. I havent needed to use this sort of math for really it slow even though. I dont disagree even though with a few reviewers who've complained that the fabric is not written for rookies. I needed to fight with a lot of the e-book and needed to pass over convinced chapters greater than as soon as. additionally, there is not approximately adequate rationalization of sure key options. you're anticipated, for instance, to just accept complex equation is an equation with an influence no more than 2 within which the equation is decided to equivalent 0. but the accompanying workbook used to be an outstanding support; in truth, there's barely enough rationalization of every notion in every one bankruptcy of the workbook that i'll nearly suggest paying for the workbook in addition to the most textbook. in any case, even though it was once a fight now and then, i used to be in a position to educate myself algebra from this e-book, and was once in a position to take my placement examination with a passing grade. Like another commenters. i purchased this e-book simply because i'm trying to find a brand new activity 2 years after leaving my earlier one, and used to be recommended that I could be able to solution questions about it. i used to be panicked, simply because i used to be by no means a robust math scholar and have not taken a math type in additional than 20 years.
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Extra info for Algebra I For Dummies (For Dummies (Math & Science))
The dot is popular because it’s easy to write. The grouping symbols are used when you need to contain many terms or a messy expression. By themselves, the grouping symbols don’t mean to multiply, but if you put a value in front of a grouping symbol, it means to multiply. indd 14 4/16/10 11:01 AM Chapter 1: Assembling Your Tools 15 ✓ ÷ means divide. The number that’s going into the dividend is the divisor. The result is the quotient. Other signs that indicate division are the fraction line and slash, /.
Say that Anika, Becky, and Cora associate. Whether Anika drives over to pick up Becky and the two of them go to Cora’s and pick her up, or Cora is at Becky’s house and Anika picks up both of them at the same time, the same result occurs — the three ladies are all in the car at the end. The associative property means that even if the grouping of the operation changes, the result remains the same. ) Addition and multiplication are associative. Subtraction and division are not associative operations.
When comparing negative numbers, the number closer to 0 is the bigger or greater number. Comparing positives and negatives Although my mom always told me not to compare myself to other people, comparing numbers to other numbers is often useful. And, when you compare numbers, the greater-than sign (>) and less-than sign (<) come in handy, which is why I use them in Table 2-1, where I put some positive- and negative-signed numbers in perspective. Two other signs related to the greater-than and less-than signs are the greater-than-or-equal-to sign (≥) and the less-than-or-equal-to sign (≤).
Algebra I For Dummies (For Dummies (Math & Science)) by Mary Jane Sterling