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Add.\newline(7s2+9s)+(9s1)(-7s^2 + 9s) + (9s - 1)\newline______

Full solution

Q. Add.\newline(7s2+9s)+(9s1)(-7s^2 + 9s) + (9s - 1)\newline______
  1. Add coefficients of s: Now add the coefficients of s. 9s+9s=18s9s + 9s = 18s
  2. Write simplified expression: Write down the simplified expression. \newline7s2+18s1-7s^2 + 18s - 1

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