Whakaoti i te M=(2x-1)^2-(x+3)^2

$$M = ( 2 x - 1 ) ^ { 2 } - ( x + 3 ) ^ { 2 }$$

Whakaoti mō M

$$M=\left(x-4\right)\left(3x+2\right)$$

Ngā Upane Otinga

Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(2x-1\right)^{2}.

$$M=4x^{2}-4x+1-\left(x+3\right)^{2}$$

Whakamahia te ture huarua \left(a+b\right)^{2}=a^{2}+2ab+b^{2} hei whakaroha \left(x+3\right)^{2}.

$$M=4x^{2}-4x+1-\left(x^{2}+6x+9\right)$$

Hei kimi i te tauaro o x^{2}+6x+9, kimihia te tauaro o ia taurangi.

$$M=4x^{2}-4x+1-x^{2}-6x-9$$

Pahekotia te 4x^{2} me -x^{2}, ka 3x^{2}.

$$M=3x^{2}-4x+1-6x-9$$

Pahekotia te -4x me -6x, ka -10x.

$$M=3x^{2}-10x+1-9$$

Tangohia te 9 i te 1, ka -8.

$$M=3x^{2}-10x-8$$

Whakaoti mō x (complex solution)

$$x=\frac{-\sqrt{3M+49}+5}{3}$$

$$x=\frac{\sqrt{3M+49}+5}{3}$$

Whakaoti mō x

$$x=\frac{-\sqrt{3M+49}+5}{3}$$

$$x=\frac{\sqrt{3M+49}+5}{3}\text{, }M\geq -\frac{49}{3}$$