Koshe dekhi 13.2 Class 8
Koshe dekhi 13.2 Class 8 Koshe dekhi 13.2 Class 8 1. উৎপাদকে বিশ্লেষণ করি- (i) \( 2a^{2}+ 5a + 2 \) সমাধানঃ \( \begin{array}{l}2{{a}^{2}}+5a+2\\=2{{a}^{2}}+\left( {4+1} \right)a+2\\=2{{a}^{2}}+4a+a+2\\=2a\left( {a+2} \right)+1\left( {a+2} \right)\\=\left( {a+2} \right)\left( {2a+1} \right)\end{array} \) (ii) \(3x^{2}+ 14x + 8 \) সমাধানঃ \( \begin{array}{l}3{{x}^{2}}+14x+8\\=3{{x}^{2}}+\left( {12+2} \right)x+8\\=3{{x}^{2}}+12x+2x+8\\=3x\left( {x+4} \right)+2\left( {x+4} \right)\\=\left( {x+4} \right)\left( {3x+2} \right)\end{array} … Read more