Common Math Mistakes!
From Huben's Wiki
m (moved Comon Algebra Mistakes! to Common Algebra Mistakes!) |
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; Don't forget to FOIL when you square an expression! | ; Don't forget to FOIL when you square an expression! | ||
− | : (a + b)<sup>2</sup> = a<sup>2</sup> + 2ab + b<sup>2</sup> | + | : (a + b)<sup>2</sup> = a<sup>2</sup> + 2ab + b<sup>2</sup><br>(sqrt(x) +3)<sup>2</sup> != x + 9 |