√(4x-8) = -8
I can immediately tell that this equation cannot have a real number solution because the definition of √ is to give the positive square root of a number
let's see what happens when we follow our regular routine ....
square both sides:
4x-8 - 64
4x = 72
x = 18
checking:
if x = 18
LS = √(72-8) = √64 = +8
RS = -8
LS ≠ RS
there is no solution, as stated at the start
This question points out why it is important to check all resulting answers after squaring both sides of an equation.
how do you solve this can you do this with the steps do I an understand them,please.
(square root start) 4x-8 (square root end)=-8
1 answer