Question

Descompuneti in factori va rog ​

Answer 1

Răspuns:

Explicație pas cu pas:

3x² + x - 2 = 3x² + 3x - 2x - 2 = 3x(x + 1) - 2(x + 1) = (x + 1)(3x - 2)

2x² - x - 3 = 2x² + 2x - 3x - 3 = 2x(x + 1) - 3(x + 1) = (x + 1)(2x - 3)

2x² + 7x - 4 = 2x² + 8x - x - 4 = 2x(x + 4) - (x + 4) = (x + 4)(2x - 1)

4x² - 12x - 7 = 2x² - 14x + 2x - 7 = 2x(x - 7) + (2x - 7) = (2x - 7)(2x + 1)

3x² - 11x - 4 = 3x² + x - 12x - 4 = x(3x + 1) - 4(3x + 1) = (x - 4)(3x + 1)

2x² - 7x + 3 = 2x² - x - 6x + 3 = x(2x - 1) - 3(2x - 1) = (x - 3)(2x - 1)

3x² + 4x - 7 = 3x² - 3x + 7x - 7 = 3x(x - 1) + 7(x - 1) = (x - 1)(3x + 7)