a. pq + h = ph-q / p-2 ==> express q in terms of p and h.
(answer is q= 2h/(p-1)^2)
b. 4s^2 + 4s - r^2 +1
(answer is 25-x/(x-3)(x+2))
thanks!
b. 4s^2 + 4s - r^2 +1
(answer is 25-x/(x-3)(x+2))
what is this. s/x?
pq + h = ph-q / p-2
what is the fraction here? ph-q / p-2 or ph= (q/(p-2))
Originally posted by gerlynn:
a. pq + h = ph-q / p-2 ==> express q in terms of p and h.
(answer is q= 2h/(p-1)^2)
(p-2)(pq + h) = ph - q
p^2q + hp - 2pq - 2h = ph - q
p^2q - 2pq + q = ph + 2h - hp
q (p^2 - 2p + 1) = 2h
q = 2h / (p-1)^2
b. 4s^2 + 4s - r^2 +1
(answer is 25-x/(x-3)(x+2))
how come there's s, r and x? i think you type wrongly
thanks!
pq + h = ph-q / p-2
(pq + h)( p-2) = ph-q
p^2q - 2pq +ph-2h = ph -q
p^2q - 2pq + q = 2h
q(p^2 - 2p + 1) = 2h
q(p-1)^2 = 2h
q= 2h/(p-1)^2
4s^2 + 4s - r^2 +1
4s(s+1) + (1^2 - r^2)
4s(s +1) + (1+r)(1-r)