exam Maths Puzzle Numerical Ability

I am having trouble with this toic can someone please help me.
Solve logarithmic equation

log x + log(x+9) = 1

Thank you inadvance for your help.

Read Solution (Total 0)

exam Other Question
2x + 3 = 8
? ABC is a isosceles triangle in which AB=AC.if E and F be the midpoints of ACand AB respectively .prove that BE =CF