1) (x-2)² +48=2-3x² 2) 4x² - 1 x(10x-9) _____________ = 3

Question

1) (x-2)² +48=2-3x²

2) 4x² - 1 x(10x-9)
_____________ =

3

Answer 1

2)(4x^2  -1)/3 = x(10x-9)
4x^2 - 1 = 30x^2 - 27x
26x^2 - 27x + 1 = 0
D = 729 - 104 = 625 = 25^2
x1 = (27 + 25) / 52 = 1
x2 = (27-25)/52 = 1/26

1)(x-2)^2 + 48 = 2 - 3x^2
x^2 - 4x + 4 + 48 = 2 - 3x^2
4x^2 -4x + 50 = 0
2x^2 - 2x +25 = 0
D1 = 1 -200 <0 Уравнение не имеет корней</span>