Question

4s^2+9s-28 factor

Answer 1

note that
-28 * 4 = -7 * 16
and 9 = 16 -7
will this help ?

Answer 2

if you dont mind can you walk me through this a little more?

Answer 3

the method people generally rote to do these kind of questions is that in
ax^2 + bx + c ,, we try to break b into m+n where mn = ac ..

Answer 4

its because we then have
ax^2 + mx + nx + c
ax(x + m/a ) + n(x+ c/n)
since mn = ac ,, we see m/a = c/n
thus we have the factorised form as
(ax + n)(x+ m/a) or (ax + n)(x+ c/n)

Answer 5

thanks for your help

Answer 6

pleased to help.. ^_^