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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
7.15 Solving Problems Using Formula for (a+b)2 - II

Example: Find the value of (21)2 using formula.
Solution: We can write (21)2 = (20+1)2.
This is the form of (a+b)2 = a2 + 2ab + b2.
= (20)2 + 2.20.1 + 12
= 400 + 40 + 1
= 441

Directions: Solve the following problems using the formula and show your work. Also write at least ten examples of your own.
Q 1: Find the value of (54)2 using formula.
2916
676
9724

Q 2: Find the value of (351)2 using formula.
12301
123201
13201

Q 3: Find the value of (452)2 using formula.
204304
123201
305809

Q 4: Find the value of (82)2 using formula.
1681
2916
6724

Q 5: Find the value of (41)2 using formula.
2061
1681
181

Q 6: Find the value of (31)2 using formula.
961
900
861

Q 7: Find the value of (26)2 using formula.
674
678
676

Q 8: Find the value of (201)2 using formula.
20201
40401
40501

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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