Q1) Expand \((x+1)(x-1)\) = \(x^2 - 1\)
Q1) Factorise \(x^2 - 144\)= \((x+12)(x-12)\)
Q1) Factorise \(100x^2-100\)= \((10x + 10)(10x - 10)\)
Q2) Expand \((x+8)(x-8)\) = \(x^2 - 64\)
Q2) Factorise \(x^2 - 16\)= \((x+4)(x-4)\)
Q2) Factorise \(25x^2-100\)= \((5x + 10)(5x - 10)\)
Q3) Expand \((x+10)(x-10)\) = \(x^2 - 100\)
Q3) Factorise \(x^2 - 1\)= \((x+1)(x-1)\)
Q3) Factorise \(36x^2-100\)= \((6x + 10)(6x - 10)\)
Q4) Expand \((x+5)(x-5)\) = \(x^2 - 25\)
Q4) Factorise \(x^2 - 100\)= \((x+10)(x-10)\)
Q4) Factorise \(100x^2-1\)= \((10x + 1)(10x - 1)\)
Q5) Expand \((x+3)(x-3)\) = \(x^2 - 9\)
Q5) Factorise \(x^2 - 361\)= \((x+19)(x-19)\)
Q5) Factorise \(49x^2-81\)= \((7x + 9)(7x - 9)\)
Q6) Expand \((x+7)(x-7)\) = \(x^2 - 49\)
Q6) Factorise \(x^2 - 64\)= \((x+8)(x-8)\)
Q6) Factorise \(64x^2-36\)= \((8x + 6)(8x - 6)\)
Q7) Expand \((x+7)(x-7)\) = \(x^2 - 49\)
Q7) Factorise \(x^2 - 196\)= \((x+14)(x-14)\)
Q7) Factorise \(16x^2-16\)= \((4x + 4)(4x - 4)\)
Q8) Expand \((x+2)(x-2)\) = \(x^2 - 4\)
Q8) Factorise \(x^2 - 36\)= \((x+6)(x-6)\)
Q8) Factorise \(9x^2-25\)= \((3x + 5)(3x - 5)\)
Q9) Expand \((x+1)(x-1)\) = \(x^2 - 1\)
Q9) Factorise \(x^2 - 225\)= \((x+15)(x-15)\)
Q9) Factorise \(4x^2-16\)= \((2x + 4)(2x - 4)\)
Q10) Expand \((x+4)(x-4)\) = \(x^2 - 16\)
Q10) Factorise \(x^2 - 121\)= \((x+11)(x-11)\)
Q10) Factorise \(81x^2-36\)= \((9x + 6)(9x - 6)\)