Ответ:
[tex](x + 3)(x - 1)[/tex]
Объяснение:
[tex] {x}^{2} + 2x - 3[/tex]
[tex] {x}^{2} + 2x - 3 = 0[/tex]
D = (b^2) - 4ac = (2^2) - 4 × 1 × (-3) = 4 + 12 = 16 > 0 , значит 2 корня
x1 = ((-b) - √D / 2a ) = ((-2) - √16 / 2 × 1 ) = ((-2) - 4 / 2 ) = -6/2 = -3
x2 = ((-b) + √D / 2a ) = ((-2) + √16 / 2 × 1 ) = ((-2) + 4 / 2 ) = 2/2 = 1
Справочный материал :
[tex]a(x - x1)(x - x2)[/tex]
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Ответ:
[tex](x + 3)(x - 1)[/tex]
Объяснение:
[tex] {x}^{2} + 2x - 3[/tex]
[tex] {x}^{2} + 2x - 3 = 0[/tex]
D = (b^2) - 4ac = (2^2) - 4 × 1 × (-3) = 4 + 12 = 16 > 0 , значит 2 корня
x1 = ((-b) - √D / 2a ) = ((-2) - √16 / 2 × 1 ) = ((-2) - 4 / 2 ) = -6/2 = -3
x2 = ((-b) + √D / 2a ) = ((-2) + √16 / 2 × 1 ) = ((-2) + 4 / 2 ) = 2/2 = 1
[tex](x + 3)(x - 1)[/tex]
Справочный материал :
[tex]a(x - x1)(x - x2)[/tex]