Powers
Powers
Is a × a × a = 3 a ? Is a 3
= a × 3?
Or, should we guess what  is?
In mathematics, each symbol, (e.g. a ×3, 3a , a 3
) has a uniquely defined meaning. a × 3 has been arbitrarily
chosen as shorthand for a + a + a . It cannot mean anything else!
a 3 has been, equally arbitrarily, chosen as
shorthand for a × a × a. It means precisely this.
3 × a is shorthand for 3a, but note that the omission of the
× sign is possible only between a number and a letter (and only
in that order). Omitting it from any other combination would lead
to something different from a product, e.g. 33 is not 3 × 3 ; aa
or a3 means a single variable consisting of two symbols each.
Always consider the (unique!) meaning of the maths you write.
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Step 1
: Enter your homework problem in an easy WYSIWYG (What you see is what you get) algebra editor:
Step 2 :
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Step 3 : Ask for an
explanation for the steps you don't understand:
Algebra Buster can solve problems in these areas...
|
simplification of algebraic expressions (operations with polynomials (simplifying, degree, synthetic division...), exponential expressions, fractions and roots (radicals), absolute values) |
|
factoring and expanding expressions |
|
finding LCM and GCF |
|
operations with complex numbers (simplifying, rationalizing complex denominators...) |
|
solving linear, quadratic and many other equations and inequalities (including basic logarithmic and exponential equations) |
|
solving a system of two and three linear equations (including Cramer's rule) |
|
graphing curves (lines, parabolas, hyperbolas, circles, ellipses, equation and inequality solutions) |
|
graphing general functions |
|
operations with functions (composition, inverse, range, domain...) |
|
simplifying logarithms |
|
basic geometry and trigonometry (similarity, calculating trig functions, right triangle...) |
|
arithmetic and other pre-algebra topics (ratios, proportions, measurements...) |
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|
$58.99
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| Only: $39.99! |
This limited time offer is only
good until
November 7th
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