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Algebra Tools: comprobación de requisito previo

Enseñamos conceptos difíciles con las palabras más simples posibles. Vamos a corroborar que conozcas los términos y las ideas que se necesitan. Este curso es el correcto si obtienes al menos 80% en esta prueba, pero menos del 70 % de la prueba de exención. Esta prueba debería ser muy fácil para ti, solo comprobaremos que sepas lo básico para entender.

Tiempo restante:

10:00

What is

10\%

894?

8940

8.94

89.4

\displaystyle \frac{10}{894}

\displaystyle \frac{894}{100}

Which of these choices is the biggest?

\displaystyle \frac{2}{3}

0.\overline{333}

\displaystyle \frac{2}{5}

\displaystyle \frac{4}{6}

\displaystyle \frac{5}{7}

Simplify:

\frac{5}{x+1} + \frac{5x^2}{x^2 + x}

5

x

\displaystyle \frac{5x^2 + x}{x^2 + x + 1}

5 + x

\displaystyle \frac{5}{x+1}

What is the average of

x+5

and

x-9?

x - 2

-2

-4

x

x - 4

Solve this equation for

x:

3x^3 - 1 = 374

x = 25

x = 5

x = 5 \sqrt{5}

x = 125

x = \sqrt[3]{375}

Simplify:

(6x + 2y) (0.5y - 1.5x)

3y^2 + 9x + x^2

2.5y + 4.5x

4.5y + 2.5x

-9x^2 + xy + y^2

y^2 - 9x^2

Which of the following is equivalent to

\frac{(3x + 1)(6x + 1)}{3} ?

Choose all of the following that apply.

\displaystyle \left(x + \frac{1}{3}\right)(6x + 1)

\displaystyle (3x+1)\left(2x + \frac{1}{3}\right)

\displaystyle \left(x + \frac{1}{3}\right)\left(2x + \frac{1}{3}\right)

(x+1)(2x+1)

\displaystyle 6x^2 + 3x + \frac{1}{3}

A root, or solution, of the equation

10x^2 - 15x + 7 = 0

is which of the following?

x = 0

x = 1

A value of

x

that makes

10x^2 - 15x = 7

true

A value of

x

that makes

10x^2 - 15x + 7

equal to zero

The square root of

10x^2 - 15x + 7

Which of the following are terms in the expansion of

(ay + 3) (by + 3)?

Choose all of the following that apply.

3ya

3by

9ab

ay

3x