Whakaoti i te left(14-xright)^2-x^2=56

$${ \left(14-x \right) }^{ 2 } - { x }^{ 2 } =56$$

Whakaoti mō x

$$x=5$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(14-x\right)^{2}.

$$196-28x+x^{2}-x^{2}=56$$

Pahekotia te x^{2} me -x^{2}, ka 0.

$$196-28x=56$$

Tangohia te 196 mai i ngā taha e rua.

$$-28x=56-196$$

Tangohia te 196 i te 56, ka -140.

$$-28x=-140$$

Whakawehea ngā taha e rua ki te -28.

$$x=\frac{-140}{-28}$$

Whakawehea te -140 ki te -28, kia riro ko 5.

$$x=5$$