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Let $ denote the integral symbol, as I am limited here by my keyboard.

Recall the formula for integration by parts:

$ u.(dv/dx) dx = uv - $ u(dv/dx) dx

So to find $^pi_0...

Convert all fractions denominator into 12

3/12 , 8/12, 6/12,  4/12

Hence in order

1/4, 2/6, 1/2, 2/3 

We shall differentiate each term in the equation with respect to x.

dy/dx (x²) = 2x

dy/dx (2y²) = 4y dy/dx

dy/dx (3x) = 3

So we now have the equation 2x +...

We are going to use the F.O.I.L Method for this expansion,

FIRST

2x*x = 2x²

OUTSIDE

2x*3 = 6x

INSIDE

-4x*x = -4x

...