Разложить на множители. 5[tex] x^{2} [/tex]+x   4[tex] x^{2} [/tex]-9   [tex] x^{2} [/tex]-4x+3   2[tex] x^{2} [/tex]+x-3    x(4-x)+2x    2(x-2)+x(x-2)

5x² + x = x(5x + 1)4x² - 9 = (2x - 3)(2x + 3)2x² + x - 3 = 2(x - 1)(x + 1.5) = (x - 1)(2x + 3)x(4 - x) + 2x = 4x - x² + 2x = -x² + 6x = x(6 - x)2(x - 2) + x(x - 2) = (2 + x)(x - 2)