³ ∫ (x+x²) dx ¹ Bantu jawab soal integral,pakay cara . Makasih

integral 3 1 (x+x²) dx
integral 3 1 (1+2x) + c
rumus = f(a) - f(b)
=> (1+2(3)) - ( 1 + 2(1))
= ( 1 + 6) - ( 1 + 2)
= 7 - 3 = 4