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ICSE-VIII-Mathematics

13: Factorisation Class 8 Maths

with Solutions - page 2

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  • Qstn #6
    15x4y3 - 20x3y
    Ans : x4y3 - 20x3y
    = 5x3y(3xy2 - 4)
  • Qstn #7
    a3b - a2b2 - b3
    Ans : a3b - a2b2 - b3
    = b(a3 - a2b - b2)
  • Qstn #7
    a3b - a2b2 - b3
    Ans : a3b - a2b2 - b3
    = b(a3 - a2b - b2)
  • Qstn #8
    6x2y + 9xy2 + 4y3
    Ans : 6x2y + 9xy2 + 4y3
    = y(6x2 + 9xy + 4y2)
  • Qstn #8
    6x2y + 9xy2 + 4y3
    Ans : 6x2y + 9xy2 + 4y3
    = y(6x2 + 9xy + 4y2)
  • Qstn #9
    17a6b8 - 34a4b6 + 51a2b4
    Ans : 17a6b8 - 34a4b6 + 51a2b4
    = 17a2b4 (a4b4 - 2a2b2 + 3)
  • Qstn #9
    17a6b8 - 34a4b6 + 51a2b4
    Ans : 17a6b8 - 34a4b6 + 51a2b4
    = 17a2b4 (a4b4 - 2a2b2 + 3)
  • Qstn #10
    3x5y - 27x4y2 + 12x3y3
    Ans : 3x5y - 27x4y2 + 12x3y3
    = 3x3y(x2 - 9xy + 4y2)
  • Qstn #10
    3x5y - 27x4y2 + 12x3y3
    Ans : 3x5y - 27x4y2 + 12x3y3
    = 3x3y(x2 - 9xy + 4y2)
  • Qstn #11
    x2(a - b) - y2(a - b) + z2 (a - b)
    Ans : x2(a - b) - y2(a - b) + z2(a - b)
    = (a - b)(x2 - y2 + z2)
  • Qstn #11
    x2(a - b) - y2(a - b) + z2 (a - b)
    Ans : x2(a - b) - y2(a - b) + z2(a - b)
    = (a - b)(x2 - y2 + z2)
  • Qstn #12
    (x + y)(a + b) + (x - y)(a + b)
    Ans : (x + y)(a + b) + (x - y)(a + b)
    = (a + b)(x + y + x - y)
    = (a + b)(2x)
    = 2x(a + b)
  • Qstn #12
    (x + y)(a + b) + (x - y)(a + b)
    Ans : (x + y)(a + b) + (x - y)(a + b)
    = (a + b)(x + y + x - y)
    = (a + b)(2x)
    = 2x(a + b)
  • Qstn #13
    2b(2a + b) - 3c(2a + b)
    Ans : 2b(2a + b) - 3c(2a + b)
    = (2a + b)(2b - 3c)
  • Qstn #13
    2b(2a + b) - 3c(2a + b)
    Ans : 2b(2a + b) - 3c(2a + b)
    = (2a + b)(2b - 3c)
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