exam Maths Puzzle Numerical Ability

Factor completely: (a+b)^2-5(a^2-b^2)+4(a-b)^2

Read Solution (Total 0)

exam Other Question

A boy is 4 years old and his sister is three times as old as he is. When the boy is 12 years old, how old will his sister be? will you help me to understand how to solve simple equations such as this one: 2x+3=9.x=