Q1) Expand \((x+4)(x-4)\) = [ \(x^2 - 16\)]

Q1) Factorise \(x^2 - 169\)= [ \((x+13)(x-13)\)]

Q1) Factorise \(100x^2-49\)= [ \((10x + 7)(10x - 7)\)]

Q2) Expand \((x+2)(x-2)\) = [ \(x^2 - 4\)]

Q2) Factorise \(x^2 - 1\)= [ \((x+1)(x-1)\)]

Q2) Factorise \(9x^2-81\)= [ \((3x + 9)(3x - 9)\)]

Q3) Expand \((x+3)(x-3)\) = [ \(x^2 - 9\)]

Q3) Factorise \(x^2 - 64\)= [ \((x+8)(x-8)\)]

Q3) Factorise \(100x^2-16\)= [ \((10x + 4)(10x - 4)\)]

Q4) Expand \((x+9)(x-9)\) = [ \(x^2 - 81\)]

Q4) Factorise \(x^2 - 196\)= [ \((x+14)(x-14)\)]

Q4) Factorise \(36x^2-25\)= [ \((6x + 5)(6x - 5)\)]

Q5) Expand \((x+7)(x-7)\) = [ \(x^2 - 49\)]

Q5) Factorise \(x^2 - 81\)= [ \((x+9)(x-9)\)]

Q5) Factorise \(4x^2-81\)= [ \((2x + 9)(2x - 9)\)]

Q6) Expand \((x+10)(x-10)\) = [ \(x^2 - 100\)]

Q6) Factorise \(x^2 - 100\)= [ \((x+10)(x-10)\)]

Q6) Factorise \(9x^2-4\)= [ \((3x + 2)(3x - 2)\)]

Q7) Expand \((x+5)(x-5)\) = [ \(x^2 - 25\)]

Q7) Factorise \(x^2 - 49\)= [ \((x+7)(x-7)\)]

Q7) Factorise \(25x^2-49\)= [ \((5x + 7)(5x - 7)\)]

Q8) Expand \((x+1)(x-1)\) = [ \(x^2 - 1\)]

Q8) Factorise \(x^2 - 400\)= [ \((x+20)(x-20)\)]

Q8) Factorise \(36x^2-9\)= [ \((6x + 3)(6x - 3)\)]

Q9) Expand \((x+8)(x-8)\) = [ \(x^2 - 64\)]

Q9) Factorise \(x^2 - 361\)= [ \((x+19)(x-19)\)]

Q9) Factorise \(4x^2-1\)= [ \((2x + 1)(2x - 1)\)]

Q10) Expand \((x+6)(x-6)\) = [ \(x^2 - 36\)]

Q10) Factorise \(x^2 - 9\)= [ \((x+3)(x-3)\)]

Q10) Factorise \(64x^2-81\)= [ \((8x + 9)(8x - 9)\)]