Question

Evaluate and simplify the expression when c=1 and d=3. 3( 2c+d ) - 4( c-d ) + d^2 = ?

Answer 1

plug in all the variables:
3(2*1+3) - 4(1-3) + 3^2

now solve (following the order of operations PEMDAS):
= 3(2+3) - 4(-2) + 9
= 3(5) - (-8) + 9
= 15 + 8 + 9
= 32