What is the highest common factor of $2$2 and $6x$6x?
What is the highest common factor of $35x$35x and $14$14?
What is the highest common factor of $15$15 and $5x$5x?
What is the highest common factor of $24m$24m, $12n$12n and $18q$18q?
generalises number properties to operate with algebraic expressions
operates with positive-integer and zero indices of numerical bases