Prove that 36^5 - 6^9 is divisible by 30

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.