SAT Subject Test Mathematics Level 1
The question says that the remainder is 3, so whatever k is, when you subtract –4 from it, you get 3: ...
Factor common to all terms: A factor common to all the terms of a polynomial can be factored out. This is ...
Factor common to all terms: ax + ay = a(x + y) Difference of squares: a^2 – b^2 = (a – b)(a + b ...
To reduce a fraction, you eliminate factors common to the top and bottom. So the first step in reducing an a ...
Now (3 – x) can be eliminated from both the top and the bottom: That’s the same as choice (B): Alternative met ...
THE GOLDEN RULE OF EQUATIONS You probably remember the basic procedure for solving algebraic equations: Do the ...
To solve this equation for x, you do whatever necessary to both sides of the equation to get x all ...
UNKNOWN IN A DENOMINATOR The basic procedure for solving an equation is the same even when the unknown is ...
Before you can cross multiply, you need to express the right side of the equation as a single fraction. ...
The answer is (E). UNKNOWN IN AN EXPONENT The procedure for solving an equation when the unknown is in an expone ...
In this case, the base on the left is 8 and the base on the right is 16. They’re both powers of 2, ...
Don’t depend on backsolving too much. There are lots of math questions that can’t be backsolved at all. ...
Sometimes the left side may not be obviously factorable. You can always use the quadratic formula. Just plug ...
To solve an equation for one variable in terms of another means to isolate the one variable on one side ...
You want to get x on one side by itself. First thing to do is eliminate the denominator by multiplying both ...
answer. Solving simultaneous equations almost always involves combining equations, but you have to figure out wh ...
If you just plow ahead without thinking, you might try to answer this question by solving for one variable ...
INEQUALITIES To solve an inequality, do whatever is necessary to both sides to isolate the variable. Just ...
What does it mean if |2x – 3| < 7? It means that if the expression between the absolute value b ...
And here’s another general rule: To solve an inequality in the form |whatever|> p, where p > 0, just p ...
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