Q1) Factorise the following;
3z + 21 = [ 3(z + 7)]

Q1) Factorise \(x^2 + 8x + 16\). [ \((x + 4)(x + 4)\)]

Q1) Factorise \(x^2 -3x -18\). [ \((x + 3)(x -6)\)]

Q2) Factorise the following;
5y + 5 = [ 5(y + 1)]

Q2) Factorise \(x^2 + 9x + 20\). [ \((x + 4)(x + 5)\)]

Q2) Factorise \(x^2 -x -6\). [ \((x + 2)(x -3)\)]

Q3) Factorise the following;
7x + 7 = [ 7(x + 1)]

Q3) Factorise \(x^2 + 8x + 15\). [ \((x + 3)(x + 5)\)]

Q3) Factorise \(x^2 + x -6\). [ \((x + 3)(x -2)\)]

Q4) Factorise the following;
10y + 10 = [ 10(y + 1)]

Q4) Factorise \(x^2 + 12x + 35\). [ \((x + 7)(x + 5)\)]

Q4) Factorise \(x^2 -2x -8\). [ \((x + 2)(x -4)\)]

Q5) Factorise the following;
7x + 14 = [ 7(x + 2)]

Q5) Factorise \(x^2 + 12x + 27\). [ \((x + 9)(x + 3)\)]

Q5) Factorise \(x^2 + 2x -15\). [ \((x + 5)(x -3)\)]

Q6) Factorise the following;
4z + 12 = [ 4(z + 3)]

Q6) Factorise \(x^2 + 7x + 10\). [ \((x + 5)(x + 2)\)]

Q6) Factorise \(x^2 -4x -21\). [ \((x + 3)(x -7)\)]

Q7) Factorise the following;
2x + 4 = [ 2(x + 2)]

Q7) Factorise \(x^2 + 12x + 36\). [ \((x + 6)(x + 6)\)]

Q7) Factorise \(x^2 -4x -12\). [ \((x + 2)(x -6)\)]

Q8) Factorise the following;
2x + 12 = [ 2(x + 6)]

Q8) Factorise \(x^2 + 17x + 72\). [ \((x + 8)(x + 9)\)]

Q8) Factorise \(x^2 + 3x -10\). [ \((x + 5)(x -2)\)]

Q9) Factorise the following;
3w + 18 = [ 3(w + 6)]

Q9) Factorise \(x^2 + 11x + 10\). [ \((x + 1)(x + 10)\)]

Q9) Factorise \(x^2 + 8x -20\). [ \((x + 10)(x -2)\)]

Q10) Factorise the following;
4x + 24 = [ 4(x + 6)]

Q10) Factorise \(x^2 + 4x + 4\). [ \((x + 2)(x + 2)\)]

Q10) Factorise \(x^2 -x -12\). [ \((x + 3)(x -4)\)]