o
ax + bx = (a + b) x
o
ax – bx = (a – b) x
q Perkalian
o
k(a + b) = ka + kb
o
(a + b) (c + d) = ac + ad + bc + bd
o
(a + b)2 = (a + b)(a + b)
= a2 + 2.ab + b2
o
(a – b)2 = (a – b)(a – b )
= a2 – 2.ab + b2
o
(a + b)(a – b) = a2 – b2
q Pemfaktoran
o
ax + ay = a(x + y)
o
ax – ay = a(x – y)
o
x2 + bx + c = (x + p)(x + q)
Cat: p + q = b
P .
q = c
o
a x2 + bx + c =
(ax + p)(ax + q) / a
Cat: p + q = b
P . q = ac
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