Question

ПоМоГиТе пожалуйста помогите плиииз​

Answer 1

а) (x - 2)(3x-1) = 2x(x - 4)+2

3x² - x - 6x + 2 = 2x² - 8x + 2

3x² - 7x + 2 = 2x² - 8x + 2

3x² - 7x = 2x² - 8x

3x² - 7x - 2x² + 8x = 0

x² + x = 0

D = 1 - 4 × 1 × 0 = 1

x1 = - 1 - 1 / 2 = - 1

x2 = - 1 + 1 / 2 = 0

b) (8 - x)(x - 2) = 10x

8x + 2x - x² - 16 = 10x

10x - x² - 16 = 10x

-x² - 16 = 0

D = 0 - 4(-1)×(-16) = - 64

x12 = 0 ± √-64 / -2

x ∉ R