Solve x^2 - 4 = 77.
x= _/173 or x= - _/73
x = 9 or x = -9
x = 11 or x = -7
x = 9i or x = -9i

2÷6+1/2 to the second power plus one

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5