Jawapan

  • Pengguna Brainly
2016-02-03T23:41:47+08:00
X^2 - 6x + 7 = h (2x-3)
x^2 - 6x + 7 - h(2x-3) = 0
x^2 - 6x + 7 - 2xh + 3h = 0
x^2 - 6x - 2xh + 7 + 3h = 0
x^2 - ( 6 + 2h ) x + 7 + 3h = 0
a = 1 , b = - 6 - 2h , c = 7 + 3h
b^2 - 4ac = 0
(- 6 - 2h)^2 - 4(1)(7+3h) = 0
4h^2 + 12h + 12h + 36 - 4(7+3h) = 0
4h^2 + 24h + 36 - 28 - 12h = 0
4h^2 + 12h + 8 = 0
( h + 1 ) ( h + 2 ) = 0
h = - 1 , h = - 2
3 5 3