Question

想搬到沒有數學的地方

想請問27和28題該怎麼算@@

26.
2 -2 +d + e +g
b=^= -3
a+d=-3+8 = 5
a(x - 1)(x + 2)(x + 3) + b(x + 1)(x − 2)(x + 3) + c(x + 1)(x + 2)(x − 3)(x − 1)(x − 2)(x − 3)
項式,則(a,b,c) = .
(0,0,0)
O
206 = = 8 b
60R+48b=0
f(1) = -8b - 120 = 0
f(3) = _ 20α = 12 C = 0
_<f(3) = box + 486 = 0
27.24x³2x² + 3x + a = b(2x − 1)(3x − 1)(4x − 1) + c(2x − 1)(3x − 1) + d(2x − 1) › J b −c+d=_
=> α.b. c = 0
28. 已知多項式f(x)除以2-4得商式x2+2x+4,餘式為 x + 1,則f(x)除以2+1之餘式為
f(x) = (x-²)(x+2) - (x²+2x+4) + X+1
fix/=