Question

Persamaan x2 -1 = 2(x-3) nilai a +b +c adalah

Answer 1

X² - 1 = 2(x - 3)
x² - 1 = 2x - 6
x² - 2x -1 - 6 = 0
x² - 2x -7 = 0
a = 1 , b = -2 , c = -7
maka nilai a + b + c adalah
a + b + c
= 1 + (-2) + (-7)
= 1 + (-9)
= -8
semoga membantu...