Cho đa thức:
f(x) = 2x^5 – 4x^4 + 3x^3 – x^2 + 5x-1
g(x)= -x^5 + 2x^4 – 3x^3 – x^2 – 2x – 7
h(x)= x^5 – 2x^4 – 2x^3- x -3
Tính h(x) + g(x) – f(x)
h(x) – g(x) + f(x)
Cho đa thức:
f(x) = 2x^5 – 4x^4 + 3x^3 – x^2 + 5x-1
g(x)= -x^5 + 2x^4 – 3x^3 – x^2 – 2x – 7
h(x)= x^5 – 2x^4 – 2x^3- x -3
Tính h(x) + g(x) – f(x)
h(x) – g(x) + f(x)
@ Isa
h(x) + g(x) – f(x)
h(x)= x^5 – 2x^4 – 2x^3 – x -3
+
g(x)= -x^5 + 2x^4 – 3x^3 – x^2 – 2x – 7
+
–f(x) = – 2x^5+4x^4 -3x^3+x^2 -5x +1
——————————————-
h(x) + g(x) – f(x) = -2 x^5 +4x^4 -8x^3 -8x -9
* h(x) – g(x) + f(x)
h(x)= x^5 – 2x^4 – 2x^3 – x -3
+
– g(x)= x^5 -2x^4 +3x^3 +x^2 + 2x +7
+
f(x) = 2x^5 – 4x^4 + 3x^3 – x^2 + 5x-1
————————————————-
h(x) – g(x) + f(x) = 2x^5 -8x^4 +4 x^3 +6x +3