Sabtu, 07 Desember 2013

RUMUS OPERASI ALJABAR

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q  Penjumlahan
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   a2 – b2        = (a + b)(a – b)
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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