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7b210b27b^2 - 10b^2

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Q. 7b210b27b^2 - 10b^2
  1. Identify Like Terms: Identify the like terms in the expression.\newlineThe like terms are 7b27b^2 and 10b2-10b^2 because they both contain the variable bb raised to the power of 22.
  2. Combine Like Terms: Combine the like terms by subtracting the coefficients. 7b210b2=(710)b27b^2 - 10b^2 = (7 - 10)b^2
  3. Perform Subtraction: Perform the subtraction of the coefficients.\newline710=37 - 10 = -3\newlineSo, 7b210b2=3b27b^2 - 10b^2 = -3b^2