92:
a: \(\dfrac{x^4+8x^2+16}{x^2+4}=x^2+4\)
b: \(\dfrac{25-x^2}{x+5}=5-x\)
c: \(\dfrac{x^3+1}{x^2-x+1}=x+1\)
d: \(\dfrac{x^2-4x+4}{2-x}=2-x\)
Đúng 0
Bình luận (0)
92:
a: \(\dfrac{x^4+8x^2+16}{x^2+4}=x^2+4\)
b: \(\dfrac{25-x^2}{x+5}=5-x\)
c: \(\dfrac{x^3+1}{x^2-x+1}=x+1\)
d: \(\dfrac{x^2-4x+4}{2-x}=2-x\)