Factorise:
6x2−17x−3
6x2−17x−3=6x2−18x+x−3 ⎧⎪⎨⎪⎩∵6×(−3)=−18∴−18=−18×1−17=−18+1⎫⎪⎬⎪⎭=6x(x−3)+1(x−3)=(x−3)(6x+1)
Factorise 2x^3-3x^2-17x+30