Solving by Combining Like Terms
x2 - 3 = 6
x = 3, -3
Rational Numbers are terminating or repeating numbers that can be written as ratios.
True
2x2 + 10 = 42
x = 4, -4
Is this number rational or irrational? Why?
pi
pi is irrational because the digits continue infinitely - it is non-repeating and non-terminating.
2x + 3 = 5x - 9
x = 4
Is this expression rational or irrational?
square root of 25 plus the square root of 49
(use your calculator)
Rational because the answer is a whole number
5 + 6 = 11
2 - (4x + 5) = 5x - 21
x = 2
Is this number rational or irrational?
1/3
Rational - it is a repeating decimal
Is this number rational or irrational?
the square root of 6
Irrational - it is non-terminating and non-repeating