SAT Subject Test Mathematics Level 2
2 a + 3a = (2 + 3)a = 5a COMBINING LIKE TERMS ax + bx = (a + b)x ax − bx = (a − b)x Adding or ...
x^2 + 4x + 3x + 12 = x^2 + 7x + 12 Multiplying polynomials: To multiply polynomials with more ...
The first term of the quotient is 2x^2 , because that’s what will give you a 2x^3 as a first term ...
To answer this question, start by cranking out the long division: The question says that the remainder ...
Square of binomial: To factor successfully, you have to do more thinking and less cranking. You have to ...
For example, 4 x^2 + 12x + 9 factors to (2x + 3)^2 , and a^2 − 10a + 25 factors to (a − 5)^2. Someti ...
Don’t forget tricks such as the difference of squares, which makes factoring the denominator very easy. The ...
When you plug h = 0 into the original expression, any term with an h drops out, and you end up ...
The rest is easy. Add 7 to both sides (expressing 7 as an improper fraction will make the addition ...
Another good way to solve an equation with the unknown in the denominator is to cross multiply. That’s the be ...
The answer is (B). This problem could also be solved by backsolving, explained on the next page. Just ...
BACKSOLVE One of the answer choices has to be the correct answer, so you can sometimes just try them out. Since t ...
QUADRATIC EQUATIONS To solve a quadratic equation, put it in the “ax^2 + bx + c = 0” form, factor th ...
“IN TERMS OF” So far in this chapter, solving an equation has meant finding a numerical value for the unkn ...
Next move all terms with z to one side and all terms without z to the other: Now factor z out of the l ...
You can solve for two variables only if you have two distinct equations. Two forms of the same equation wil ...
ABSOLUTE VALUE To solve an equation that includes absolute value signs, think about the two different ...
What does it mean if ? It means that if the expression between the absolute value bars is positive, ...
|whatever| < p means −p < whatever < p For example, |x − 5| < 14 becomes −14 < x − ...
(ax)(bx) = (ab)x^2 Multiplying Binomials—FOIL Classic Factorables Factor common to all terms: ax + ay = a(x + y) ...
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