exam Maths Puzzle Numerical Ability

Factorise:
#1 a2 + 6ab + 9b2 - 1
PLEASE NOTE THAT IN THE QUESTION a AND b ARE NOT MULTIPLYING BY 2, BUT BOTH HAVE SQUARES i.e. (a)square + 6ab + 9(b)square - 1

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exam Other Question
if abc=1, show that 1loga^x + 1logb^x +1logc^x=0 Find the missing values that solve this equation.
y = 5 -4x

(5, ____) (1, ____) (-1, ____)


I need the missing points and the steps :)