2)Which one of the following shows that a square number can be divided into the sum of two consecutive triangular numbers?
3)In the square sequence 1,4,9.16.........,if the nth term is 225 and the mth term is 324,find the values of n and m. -2 -3既2次方 -3 4)-〔-----------)x----------------÷-----------------=? 0+(-3) 2 (-7)既2次方
5)If the total tuition fee is given by $(1500c+800),where c stands for the number of courses enrolled. a)Mark has to pay $5300 as tuition fee to study Chinese Culture ,how many courses has Mark enrolled in? b)Joan wants to join 2 courses.How much money should she pay?
6)Write down the munber pattern of the sequence 4,8,12.........