Question

Помогите пожалуйста срочно нужно

Answer 1

1) I3x²+7xI = 4

3x² + 7x = 4

3x² + 7x= -4

$x=frac{-7+sqrt{97} }{6}$

x = $frac{-7-sqrt{97} }{6}$

x = -1

x = $-frac{4}{3}$

x₁ = $frac{7-sqrt{97} }{6}$, x₂ = $frac{4}{3} , x_{3} = 1, x_{4} = frac{-7+sqrt{97} }{6}$

2. x² - 5 * IxI + 4 = 0

x² - 5x + 4 = 0, x≥0

x² - 5 * (-x) + 4 = 0, x<0

x=4, x≥0

x = 1, x≥0

x = -1, x<0

x = -4, x<0

x = 1

x = 4

x = -4

x = -1

x₁ = -4, x₂ = -1, x₃ = 1, x₄ = 4