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ICSE-VIII-Mathematics

14: Linear Equations in one Variable Class 8 Maths

with Solutions -
Qstn# A-18 Prvs-QstnNext-Qstn
  • #18
    (x - 5)2 - (x + 2)2 = -2
    Ans : (x - 5)2 - (x + 2)2 = -2
    ⇒ (x2 - 10x + 25) - (x2 + 4x + 4) = -2
    ⇒ x2 - 10x + 25 - x2 - 4x - 4 = -2
    ⇒ -10x - 4x + 25 - 4 = -2
    ⇒ -14x = 4 - 2 - 25 = - 23
    ⇒ x = -23/-14
    = 23/24
    = 1 9/14