Question

3(2c+d)-4(c-d)+d squared when c=1 d=3
please explain steps

Answer 1

3(2c+d)-4(c-d)+d^2.

6c+3d-(4c+4d)+d^2.

6×1+3×3-4×1+4×3+9.

6+9-4+12+9=32.