Answer:
1764
Step-by-step explanation:
= (42+2)
= (40+2) (40+2)
= 40 (40+2)+2(40+2)
= [40×40+40×2] + [2×40+2×2]
= [1600+80] + [80+4]
= 1680 + 84
= 1,764
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Verified answer
Answer:
1764
Step-by-step explanation:
= (42+2)
= (40+2) (40+2)
= 40 (40+2)+2(40+2)
= [40×40+40×2] + [2×40+2×2]
= [1600+80] + [80+4]
= 1680 + 84
= 1,764
Answer:
We can use the identity: (a+b)2 = a2 + b2 + 2ab, to find the square of 42. Therefore, the square of 42 is 1764.