Class 8 Mathematics: Algebraic Expressions and Identities
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Q1 · MCQ · 1 mark
Which of the following is a monomial?
Q2 · MCQ · 1 mark
What is the degree of the polynomial 4x3 + 2x2 - x + 7?
Q3 · MCQ · 1 mark
Expand (x + 5)2 using identity (a + b)2 = a2 + 2ab + b2.
Q4 · MCQ · 1 mark
What is the value of (a - b)2 when a = 7 and b = 3?
Q5 · MCQ · 1 mark
Factorise x2 - 9 using a2 - b2 = (a+b)(a-b).
Q6 · MCQ · 1 mark
Add: (3x + 4y) + (5x - 2y)
Q7 · FILL · 1 mark
The coefficient of x2 in 5x3 - 3x2 + 7x - 1 is ____.
Q8 · FILL · 1 mark
(a + b)2 = a2 + ____ + b2
Q9 · FILL · 1 mark
(x + 3)2 = x2 + 6x + ____
Q10 · FILL · 1 mark
If a = 4 and b = 1, then (a + b)(a - b) = ____
Q11 · SHORT · 3 marks
Subtract (2x2 - 3x + 4) from (5x2 + x - 2). Show all steps.
Q12 · SHORT · 3 marks
Expand (2x + 3)2 using a standard identity. Write the identity and the answer.
Q13 · SHORT · 3 marks
Verify (a + b)(a - b) = a2 - b2 for a = 10 and b = 3.