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Simora [160]
3 years ago
12

Find 85^2 using mental math. a. 5,625 b. 7,225 c. 6,825 d. 6,400

Mathematics
2 answers:
Nat2105 [25]3 years ago
7 0
B bro 7,225. 85x85 should do the trick:)
RSB [31]3 years ago
5 0

Answer:

7,225

Step-by-step explanation:

find 85^2 using mental math

85^2 = 85 * 85

85 can be written as 80 +5

(80+5)(80+5)

Multiply each term inside the parenthesis

Multiply 80 with 80 +5 and then we multiply 5 with 80 +5

It becomes

6400 + 400+400+ 25

Now we add all the numbers

7,225

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Answer:

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To prove

As given

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