GCSE Secondary Maths Age 13-17 - Algebra: Proof - Explained
Interactive Video
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Mathematics, Information Technology (IT), Architecture
•
10th - 12th Grade
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial expression that needs to be proven as even?
N^2 - (N-2)^2
(N-2)^2 + 2N
N^2 + (N-2)^2
N^2 - 2N
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When expanding (N-2)^2, what is the correct expression obtained?
N^2 - 4N - 4
N^2 - 2N + 4
N^2 + 4N + 4
N^2 - 4N + 4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of simplifying the expression after expansion and collecting like terms?
2N - 6
2N + 6
4N + 6
4N - 6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the expression always even after factorization?
Because it is multiplied by 2
Because it is multiplied by 3
Because it is multiplied by 4
Because it is multiplied by 5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one key point to remember when expanding and simplifying expressions?
Be careful with negative signs
Always add terms
Ignore like terms
Multiply all terms by 3
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