Вычислите (3,7\^2-6,3^2)*(13^2-12,6^2)/(дробь) (4,2-5,8^2)*(2,3^2-0,3^2)Сократите дробь x^6-x^4/(дробь) x^3+x^2

[latex] \frac{(3.7^2-6.3^2)*(13^2-12.6^2)}{(4.2^2-5.8^2)(2.3^2-0.3^2)}= \frac{(3.7-6.3)(3.7+6.3)(13-12.6)(13+12.6)}{(4.2-5.8)(4.2+5.8)(2.3-0.3)(2.3+0.3)}= \\ = \frac{(-2,6)*10*0.4*25.6}{(-1.6)*10*2*2.6}= \frac{25.6}{8}=3.2 [/latex] [latex] \frac{x^6-x^4}{x^3+x^2}= \frac{(x^3)^2-(x^2)^2}{x^3+x^2}= \frac{(x^3-x^2)(x^3+x^2)}{x^3+x^2}=x^3-x^2 [/latex]