(7 x 7) - (5 x 3)
To evaluate the expression (3xy + 4y^3) when (y = 2) and (x = 5), substitute the values into the expression. This gives: [ 3(5)(2) + 4(2^3) = 30 + 4(8) = 30 + 32 = 62. ] Thus, the value of the expression is 62.
To evaluate the expression when ( n ) equals a specific value, you substitute that value into the expression in place of ( n ). For example, if the expression is ( f(n) = n^2 + 3n ), you would calculate ( f(7) ) by substituting 7 for ( n ), resulting in ( 7^2 + 3(7) ). Similarly, for ( n = 0.4 ), you would substitute 0.4 into the expression and compute the result. This process allows you to find the numerical value of the expression for those specific values of ( n ).
5.9
[10-(4*2)]*3
As it stands (because the rest of the expression may be missing) the evaluation to the constant value of -3 will be the result.
Take 3 and substitute into the expression given to you but not mentioned in the question here and evaluate the expression. "Sub and Solve" I say.
3 6
2*3*4 = 24
(3 * 3)(2 * 5) (9)(10) 90
14
Unfortunately there is no expression to evaluate!
To evaluate 15k when k equals 3, you would substitute the value of k into the expression. Therefore, 15k becomes 15(3), which simplifies to 45. So, when k equals 3, 15k equals 45.
5.9
[10-(4*2)]*3
-2-3=+7
As it stands (because the rest of the expression may be missing) the evaluation to the constant value of -3 will be the result.
Evaluating the expression is usually used in math, and it means solve the question.