Expanding Quadratics

Question 1:

x1x+3
x2+2x3

Question 2:

x+1x5
x24x5

Question 3:

3x8x7
3 x229x+56

Question 4:

3x+10x6
3 x28x60

Question 5:

3x42x7
6 x229x+28

Question 6:

3x+102x5
6 x2+5x50