Question 154931
when a multi-term quantity in parentheses is multiplied by by another quantity
__ the multiplication is "distributed" over ALL the terms


ex. a(x+y-z)= ax+ay-az


ex. (a+b)(x+y-z)=ax+ay-az+bx+by-bz


4(6 + 8) + 2 (9 - 7)=4*6 + 4*8 + 2*9 -2*7=24+32+18-14=60