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Exercise

$243-3a^2$

Step-by-step Solution

Learn how to solve factor by difference of squares problems step by step online. Factor the expression 243-3a^2. Factor the polynomial 243-3a^2 by it's greatest common factor (GCF): 3. Calculate the power \sqrt{81}. Any expression multiplied by 1 is equal to itself. Simplify \sqrt{a^2} using the power of a power property: \left(a^m\right)^n=a^{m\cdot n}. In the expression, m equals 2 and n equals \frac{1}{2}.
Factor the expression 243-3a^2

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Final answer to the exercise

$3\left(9+a\right)\left(9-a\right)$

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  • Integrate by partial fractions
  • Product of Binomials with Common Term
  • FOIL Method
  • Integrate by substitution
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  • Integrate using tabular integration
  • Integrate by trigonometric substitution
  • Weierstrass Substitution
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$x^2-225$

$49-x^2$

Main Topic: Factor by Difference of Squares

The difference of two squares is a squared number subtracted from another squared number. Every difference of squares may be factored according to the identity a^2-b^2=(a+b)(a-b) in elementary algebra.

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