Tīpoka ki ngā ihirangi matua
Whakaoti mō z
Tick mark Image
Whakaoti mō x
Tick mark Image

Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

z=2\left(x^{2}+6x+9\right)-5
Whakamahia te ture huarua \left(a+b\right)^{2}=a^{2}+2ab+b^{2} hei whakaroha \left(x+3\right)^{2}.
z=2x^{2}+12x+18-5
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x^{2}+6x+9.
z=2x^{2}+12x+13
Tangohia te 5 i te 18, ka 13.