Whakaoti i te xsqrt{40}+3cos(4)=70

$$x \sqrt { 40 } + 3 \cos ( 4 ) = 70$$

Whakaoti mō x

$$x = \frac{335036539246102637 \sqrt{10}}{100000000000000000} = 10\frac{59478563398076930}{1 \times 10^{17}} \approx 10.594785634$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Evaluate trigonometric functions in the problem

$$x \sqrt{40} + 3 \cdot 0.9975640502598242 = 70$$

Tauwehea te 40=2^{2}\times 10. Tuhia anō te pūtake rua o te hua \sqrt{2^{2}\times 10} hei hua o ngā pūtake rua \sqrt{2^{2}}\sqrt{10}. Tuhia te pūtakerua o te 2^{2}.

$$x\times 2\sqrt{10}+3\times 0.9975640502598242=70$$

Whakareatia te 3 ki te 0.9975640502598242, ka 2.9926921507794726.

$$x\times 2\sqrt{10}+2.9926921507794726=70$$

Tangohia te 2.9926921507794726 mai i ngā taha e rua.

$$x\times 2\sqrt{10}=70-2.9926921507794726$$

Tangohia te 2.9926921507794726 i te 70, ka 67.0073078492205274.

$$x\times 2\sqrt{10}=67.0073078492205274$$

He hanga arowhānui tō te whārite.

$$2\sqrt{10}x=67.0073078492205274$$

Whakawehea ngā taha e rua ki te 2\sqrt{10}.

$$\frac{2\sqrt{10}x}{2\sqrt{10}}=\frac{67.0073078492205274}{2\sqrt{10}}$$

Mā te whakawehe ki te 2\sqrt{10} ka wetekia te whakareanga ki te 2\sqrt{10}.

$$x=\frac{67.0073078492205274}{2\sqrt{10}}$$

Whakawehe 67.0073078492205274 ki te 2\sqrt{10}.

$$x=\frac{335036539246102637\sqrt{10}}{100000000000000000}$$