Basic Buttons

Substitution

100

Given x = 4, y = 2, and z = −1, the value of (x + y − z)(y + z) is...

  

(4 + 2 - (-1))(2 + (-1)) = 7

200

The value of 2x²y when x = −9 and y = −3 is...

2(-9)²(-3) = -486

300

Given x = 3, y = 24, and z = -2, the value of (x + y + z)/(x - z)² is...

(3 + 24 + (-2))/(3 - (-2))² = 1

Scientific Notation

100

In scientific notation, the product of 4 and 0.0000056 is...

2.24 x 10^-5

200

In scientific notation, the sum of 0.00043 and 0.000072 is...

5.02 x 10^-4

300

In scientific notation, the quotient of 0.000027 and 0.0003 is...

9 x 10^-2

Radicals

100

√3 + √12 + √27 = ?

    A. 6√3          B. 3√7          C. 12√3        

A. 6√3

200

√2 - √8 + √32 = ?

    A. 4√7          B. 3√2          C. 6√2  

B. 3√2

300

Let s be any real number such that 6 < √s < 10. Which of the following is a possible value of s?

A. 14.7     B. 27.9     C. 42.1

C. 42.1

Complex Numbers

100

(9 + 8i)²

17 + 144i

200

(7 - 4i)²

33 - 56i

300

For i = √−1, (5 - 2i)² = ?

  

21 - 20i