question_answer 22)

(a) Form expressions using \[t\] and 4. Use not more than one number operation. Every expression must have tin it. (b) Form expression using \[y,\,2\] and 7. Every expression must have \[y\] in it. Use only two number operations. These should be different.                

Answer:

                (a) By using only one number operation, we can form the following expressions \[t+4,t-4,4t,\frac{t}{4},\frac{4}{t},4-t,4+t,\]etc. (b) By using only two number operations, we can form following expressions by using \[y,\,\,2\] and 7 \[2y+7,2y-7,7y+2,7y-2,\] \[\frac{y}{2}+7,\frac{y}{2}-7,\frac{y}{7}+2,\frac{y}{7}-2,\] All these expressions are different.