i cannot understand where i am going wrong, the question is to find where the two curves
meet:
(squared=)
x+y=25 (1)
y=x-5 (2)
heres how i worked it out:
(1) y=25-x
y=5-x
subst y into 2
5-x=x-5
x+x-10=0
this does not factorise! help! i am mathematically challenegd and i work hard to try abd get good grades and things like this frustrate me, i can do all the other simluatneous eqns except this type