find the integral of (2x - (3x^1/2) +1) between 9 and 4

2x become x²

3x^1/2 becomes 2x^3/2

1 becomes x

sub 9 into values for x = (81 - 54 +9) which equals 36

sub 4 into values for x = (16 - 16 + 4) which equals 4

now take away the value when you sub in 4 from when you sub in 9 

= 36-4= 32