Question

Describe the error in finding the product (big ideas math)

Answer 1

d

Explanation:

you have to foil in situations like these, getting you

ksquared +4k+4k+16

2(k)(4) is the same thing as 4k+4k, which is what is missing from the answer

Answer 2

The error is that the middle term, ( 2(k)(4) ), is missing in the expansion of ( (k+4)² ).

The error in finding the product in the given equation ( (k+4)=k²+4² ) is that the middle term, ( 2(k)(4) ), is missing.

When expanding the left side of the equation using the square of a binomial formula, the middle term should be included.

The correct expansion should be: [ (k+4)² = k² + 2(k)(4) + 4² ]

Therefore, the error is that the middle term, ( 2(k)(4) ), is missing in the expansion of ( (k+4)²).