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الجبری اظہار اور کلیے

نویں جماعت · ریاضی · 6 سوالات

نام: ____________________   تاریخ: ____________

  1. What is (a + b) squared?

    • A 2a + 2b
    • B a2 - 2ab + b2
    • C a2 + 2ab + b2
    • D a2 + b2

  2. What is (a - b) squared?

    • A a2 - ab + b2
    • B a2 - 2ab + b2
    • C a2 - b2
    • D a2 + 2ab + b2

  3. If a + b = 5 and ab = 6, what is a2 + b2?

    • A 13
    • B 37
    • C 11
    • D 25

  4. What is the value of (101)2 using a formula?

    • A 10001
    • B 10101
    • C 10201
    • D 10200

  5. The degree of the polynomial 3x^4 + 2x^2 + 1 is:

    • A 1
    • B 2
    • C 4
    • D 3

  6. a2 - b2 is equal to:

    • A a(a - b)
    • B (a + b)2
    • C (a + b)(a - b)
    • D (a - b)2

جوابی کلید

1. C, 2. B, 3. A, 4. C, 5. C, 6. C

  1. (a + b)2 = a2 + 2ab + b2.

  2. (a - b)2 = a2 - 2ab + b2.

  3. a2 + b2 = (a + b)2 - 2ab = 25 - 12 = 13.

  4. (100 + 1)2 = 10000 + 200 + 1 = 10201.

  5. The degree is the highest power of x, which is 4.

  6. Difference of squares: a2 - b2 = (a + b)(a - b).