. A dog runs from one side of a park to the other 80.0 meters across and takes 16.0 seconds to cross the park. What is the speed
1 answer:
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Answer:
D) Jack made a mistake while squaring first term, 16x^2 - 8x +1
Step-by-step explanation:
we apply (a-b)^2 formula
a= 4x and b= 1
Replace 'a' with 4x and 'b' with 1
(4x)^2 is 16x^2
Jack made a mistake while squaring first term
(4x)^2 is 4^2x^2 that is 16x^2