Question

Find the square of 45 with formula

Answer 1

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(45)²

=> (40+5)²

=> (40)²+(5)²+2(40)(5)

=> 1600+25+400

=> 2025

Hope it helps........

Answer 2

Answer:

Hey mate! Here's your answer:

45² = 2025.

Step-by-step explanation:

45 = 40 + 5.

By (a + b)² = a² + 2ab + b² where a = 40 and b = 5,

40² + 2(40)(5) + 5²

1600 + 400 + 25

2000 + 25

2025.

So 45² = 2025.

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