Question

tim x biet

(x+1)2+(x-2)^3-2x^2(x-1,5)=3

Answer 1

x+1 mu 3 chu ko phai mu 2 nha tui ghi lon cai dau tien

Answer 2

Ta có: (x + 1)³ + (x - 2)³ - 2x² (x - 1,5) = 3

x³ + 1 + x³ - 8 - 2x³ + 3x² = 3

(x³ + x³ - 2x³ ) + 3x² +(1 - 8) = 3

3x² - 7 = 3

3x² = 10

x² = \(\frac{10}{3}\)

Vậy x = \(\sqrt{\frac{10}{3}}\)