\( \begin{array}{ll}\text { (2) } & 3 y^{2}-7 y+2 \\ \text { (4) } & 7 n^{2}-13 n-2 \\ \text { (6) } & 6 t^{2}+11 t+4 \\ \text { (8) } & 12 x^{2}+19 x-18 \\ \text { (10) } & 21 x^{2}+40 x+16 \\ \text { (12) } & 18 y^{2}+11 y-24 \\ \text { (14) } & -9 p^{2}+13 p-4 \\ \text { (16) } & 14 x y-9 x^{3} y-15\end{array} \)
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Mind Expander
Here's a fun twist for you: Did you know that quadratic equations, like the ones you've listed, have been around since ancient civilizations? The Babylonians were solving them over 4,000 years ago using geometric methods! Their work laid the groundwork for modern algebra, and today we often use formulas like the quadratic formula to find solutions quickly. Also, when dealing with polynomials, don’t forget to check for common mistakes such as misapplying the distributive property or forgetting to combine like terms. A common problem-solver's tip is to always double-check your signs while factoring or expanding; a little hiccup here can lead you down the wrong mathematical path!