find the square of the following numbers 23 and42
Answers
Answered by
3
Answer:
Step-by-step explanation:
Square of 23= 23×23 = 529
Square of 42= 42×42 = 1764
Answered by
4
Answer:
(a + b)² = a² + 2ab + b²
Step-by-step explanation:
(23)² = (20 + 3)²
= (20)² + 2(20)(3) + (3)²
= 400 + 120 + 9
= 529
(42)² = (40 + 2)²
= (40)² + 2(40)(2) + (2)²
= 1600 + 160 + 4
= 1764
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