What is x to the power of 0

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.

Find the quotient. 50a2 – 98b2 -5a +7b

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.