Question

If a+b=7 and ab = 4, find the value of a2+b2.answer fast to get marked as brainliest​ Get the answers you need​

Answer 1

Answer:

⇒ (a² + b²) = (7)² - 2(4). ⇒ (a² + b²) = 49 - 8.

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Answer 2

Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, carbonate or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment.