SOLUTION: If h(x)=x^2-5x+4, i) express h(2a)-h(a) in terms of a. ii) find values of 'a' for which h(a)=0 iii) express h(a^2)+h(a) in terms of 'a'.

Question 1133053: If h(x)=x^2-5x+4,
i) express h(2a)-h(a) in terms of a.
ii) find values of 'a' for which h(a)=0
iii) express h(a^2)+h(a) in terms of 'a'.
Answer by josgarithmetic(39623) (Show Source): You can put this solution on YOUR website!
(i) is a matter of substitution and then simplify.

(iii) is a matter of subsitution.

You can do these yourself.

(ii)
You only need to substitute here for a.

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