tentukan jumlah dan hasil kali akar ersamaan kuadrat berikut
h.x²-2x+4=0
i.x²-5x+8=0
j.6x²+2=0
tentukan jumlah dan hasil kali akar ersamaan kuadrat berikut
h.x²-2x+4=0
i.x²-5x+8=0
j.6x²+2=0
jawab
h.x²-2x+4=0
x1 + x2 = -b/a = -(-2))/1 = 2
x1 . x2 = c/a = 4/1 = 4
i.x²-5x+8=0
x1 + x2 = -b/a = -(-5)/1 = 5
x1 . x2 = c/a = 8/1 = 8
j.6x²+2=0
x1 + x2 = -b/a = -0/6 = 0
x1 . x2 = c/a = 2/6 = 1/3
jawaban oleh BBOchannel