Réitigh 30*left(1+xright)^2=36.3

$$30 \times { \left(1+x \right) }^{ 2 } =36.3$$

Réitigh do x.

$$x=0.1$$

$$x=-2.1$$

Céimeanna tríd an bhFréamh Chearnach a Fháil

Roinn an dá thaobh faoi 30.

$$\frac{30\left(x+1\right)^{2}}{30}=\frac{36.3}{30}$$

Má roinntear é faoi 30 cuirtear an iolrúchán faoi 30 ar ceal.

$$\left(x+1\right)^{2}=\frac{36.3}{30}$$

Roinn 36.3 faoi 30.

$$\left(x+1\right)^{2}=1.21$$

Tóg fréamh chearnach an dá thaobh den chothromóid.

$$x+1=\frac{11}{10} x+1=-\frac{11}{10}$$

Bain 1 ón dá thaobh den chothromóid.

$$x+1-1=\frac{11}{10}-1 x+1-1=-\frac{11}{10}-1$$

Má dhealaítear 1 uaidh féin faightear 0.

$$x=\frac{11}{10}-1 x=-\frac{11}{10}-1$$

Dealaigh 1 ó \frac{11}{10}.

$$x=\frac{1}{10}$$

Dealaigh 1 ó -\frac{11}{10}.

$$x=-\frac{21}{10}$$

Tá an chothromóid réitithe anois.

$$x=\frac{1}{10} x=-\frac{21}{10}$$