book Maths Puzzle Numerical Ability

Find the area of the trapezoid at the right by combining the area of the triangle and the area of the rectangle. Now I don't really know how to explain how this figure looks but I

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All that I have to do is factor this but I think that it is prime. Can someone please tell me if I am right? Thank you.
15x^2+16x+4 1. -3 = 7 - 4y

2. 2x + 4(3x - 6) = 4 - (6x + 2)

HELP, HELP