math
posted by Anonymousab on .
how do you solve this can you do this with the steps do I an understand them,please.
(square root start) 4x8 (square root end)=8

√(4x8) = 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:
4x8  64
4x = 72
x = 18
checking:
if x = 18
LS = √(728) = √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.