Substitution of values in the algebraic expressions
Answer Text: Substitution of values in the algebraic expressions:This is the process of giving variables specific values in an expression.Example 1.Evaluate the expression x2+y2y+2 if x =2 and y = 1Example 2.Three years ago, Juma was three times as old. As Ali in two years time, the sum of their ages will be 62. Determine their ages