according to identity (a+b)² = a²+b²+2ab
therefore:
2²+5²+2×2×5 - 4²
= 4+25+20 - 16
=49 - 16
= 33
hope helps
Answer:
33
Explanation:
(2+5)^2 - 4^2
(7^2) - 4^2
49 - 16 = 33
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