Hi
I have this question:
(i) show that (2 + x)^4 = 16 + 32x + 24x^2 + 8x^3 + x^4 for all x.
for all x? What does that mean?
(ii) Find the values of x for which (2 + x)^4 = 16 + 16x + x^4
??
Can someone please explain?
Angus
Hi
I have this question:
(i) show that (2 + x)^4 = 16 + 32x + 24x^2 + 8x^3 + x^4 for all x.
for all x? What does that mean?
(ii) Find the values of x for which (2 + x)^4 = 16 + 16x + x^4
??
Can someone please explain?
Angus
x^4+8 x^3+24 x^2+32 x+16 = x^4+16x+16[/tex]
and cancel and when you take 16x from both sides you get
You can factor out from this equation to give
edit: You have to sub in 0, -1 and 2 on the RHS too
For example using 0
and so is a solution