3 years ago

Which shows 42^2 − 38^2 being evaluated using the difference of perfect squares method?

Mathematics

2 answers:

Viktor [21]3 years ago

4 0

Answer:The correct answer is D

Step-by-step explanation:

Basile [38]3 years ago

3 0

Answer:

Step-by-step explanation:

a² - b² ← is a difference of squares and is factored in general as

(a + b)(a - b)

42² - 38² ← is a difference of squares and factors as

42² - 38² = (42 + 38)(42 - 38) = 80(4) = 320 → D

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