Question

9-8 use isantities to solve the questions
ay 678 3

Answer 1

Answer:

4891 is your answer

Step-by-step explanation:

67*73=(70-3)(70+3)

{ (a+b)(a-b)=(a)^2-(b)^2}

=[(70)^2]-[(3)^2]

=(4900)-(9)

=4891

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Answer 2

Answer:

$(70 - 3)(70 + 3) \\ = > {70}^{2} - {3}^{2} \\ = > 4900 - 9 \\ = > 4891$