kitty<3

sqrt(5) * sqrt(3) is the same thing as sqrt(5*3). There is a property of square roots that $${\sqrt{{\mathtt{x}}}}{\mathtt{\,\times\,}}{\sqrt{{\mathtt{y}}}} = {\sqrt{{\mathtt{x}}{\mathtt{\,\times\,}}{\mathtt{y}}}}$$ 

So simplified, the answer would be  $${\sqrt{{\mathtt{15}}}}$$

(2x² + 3)²

= (2x² + 3) * (2x² + 3)

Use the Distributive Property to expand:

= (2x² * 2x²) + (3 * 2x²) + (2x² * 3) + (3 * 3)

= 4x⁴ + 6x² + 6x² + 9

= 4x⁴ + 12x² + 9

You can plug this into this site's calculator:

$$\left({\frac{{\frac{{\mathtt{1}}}{{\mathtt{3}}}}{\mathtt{\,\times\,}}{\mathtt{12}}}{{\mathtt{19}}}}\right){\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}} = {\frac{{\mathtt{35}}}{{\mathtt{76}}}} = {\mathtt{0.460\: \!526\: \!315\: \!789\: \!473\: \!7}}$$ 

If, however, you meant how to solve this equation without a calculator, please post again and I'll be happy to explain:)

The circle has a radius of 50, so the diameter (twice the radius) is 100. Therefore, the circumference of the circle would be pi * diameter, = 100pi.

The major arc of ABC (since the points are in that order on the circle) would be the total circumference minus the minor arc of AC. Since the minor arc AC is 10pi, major arc ABC would be 100pi (circumference) - 10pi (length of AC).

If you sketch the circle, the length of the major arc and the length of the minor arc together make up the whole circumference of the circle.

Pi es un número irracional. Entonces, pi/2 es irracional, también. 

Pi y pi/2 son números reales, también. 

-8 * 4 = -32

La raiz cubica de -32 es  $${\sqrt[{{\mathtt{3}}}]{-{\mathtt{32}}}} = -{\mathtt{3.174\: \!802\: \!103\: \!936\: \!398\: \!9}}$$

Tu respuesta necesita un signo negativo, porque es la raiz cubica.

Por ejemplo, la raiz cubica de -8 es -2 porque -2*-2*-2 = -8. No es 2, porque 2*2*2=8.

En la calculadora, usa los botones de parentesis ( ) 

Estan encima de los botones de 7 y 9.

I would suggest you not plug in the equation into the calculator.

For exponents, either use the ^ button on your keyboard, or use the buttons on the calculator with "x², x³, or x^y"

For both ways, first type in the base number, then the symbol, then the power it is raised to.

For example, 4 squared would be 4^2, = 16.

Oh, just a few days before your fireworks took place~

Si el exponente es: -4.2^9

Escribelo en la calculadora:   $${\left(-{\mathtt{4.2}}\right)}^{{\mathtt{9}}} = -{\mathtt{406\,671.383\: \!849\: \!472}}$$