book Maths Puzzle Numerical Ability

a^2-9ab+81b^2

Read Solution (Total 0)

book Other Question

x+2x+5=x+19 please help my daughter understand how to do this type of math she is 10 yrs old thank you Roz is twice as old as Grace. In 5 years the sum of their ages will be 28. How old are they now?