.The equation p = 3f - 50 can be used to represent a shop's profit from Valentine's Day's flower sales, where f represents the n
2 answers:
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Answer:
Firstly, we'll apply the below identity.
Applying the above identity.
⇒ (√5 + √2)²
⇒ (√5)² + (√2)² + 2×(√5)×(√2)
⇒ 5 + 2 + 2√10
⇒ 7 + 2√10
Comparing the LHS and RHS
⇒ 7 + 2√10 = a + b√10
∴ a = 7 and b = 2.