Keystone Review Mod 1 (Day 1)

Front

Simplify: 4√75

Back

20√3

Front

Simplify: √96

Back

4√6

Front

Simplify the Expression: -4(x + 6) + 2(x - 2)

Back

-2x - 28

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

Which of the following is rational? .211232112421125..., π, √25, √12

Back

√25 (since √25 = 5, which is a rational number).

Front

What is the square root of a number?

Back

The square root of a number x is a number y such that y² = x.

Front

Simplify: √(a²)

Back

a (for a ≥ 0).

Front

What is the product of square roots?

Back

√a * √b = √(a * b).

Front

What is the sum of square roots?

Back

√a + √b cannot be simplified further unless a and b are perfect squares.

Front

What is the difference of squares formula?

Back

a² - b² = (a - b)(a + b).