Jawapan

  • Pengguna Brainly
2016-02-11T21:02:34+08:00
(x+k)²=16
(x+k)(x+k) - 16 = 0
x^2 + kx + kx + k^2 - 16 = 0
x^2 + 2k x + k^2 - 16 = 0
sor = - 2k , por = k^2 - 16
- 7 + a = - 2k , (a)(-7) = k^2 - 16
a = - 2k + 7 , (-2k + 7)(-7) = k^2 - 16
                    , 14k - 49 = k^2 - 16
                    , k^2 - 14k - 16 + 49 = 0
                    , k^2 - 14k + 33 = 0
                    , (k-11)(k-3) = 0
                    , k = 11 , k = 3
2 5 2
cemana nak cari sor dgn por??
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