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Algebraic Expressions Test - 5

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Algebraic Expressions Test - 5
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Weekly Quiz Competition
  • Question 1
    1 / -0

    From the sum of 7x − 2y − 3z  and 3x + 5y − 8z, take away x − 3z.

    Solution

    The required difference =(7x − 2y − 3z)

     +(3x + 5y − 8z) − (x − 3z)  

    = (10x + 3y − 11z) − (x − 3z) = 9x + 3y = 8z

     

  • Question 2
    1 / -0

    Simplify  4/11 (66x + 44) + 3/11 (33x − 33).

    Solution

    4/11 (66x + 44) + 3/11 (33x − 33) = 33x + 7

     

  • Question 3
    1 / -0

    If 5 is added to three times the product of two numbers m and n. The  expression will be_______.

    Solution

    An algebraic expression is a mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators. According to the given question, three times the product of two number m and n will be 3mn. If 5 is added to three times the product of two numbers m and n, the final expression will be 5 + 3mn or 3mn + 5.

     

  • Question 4
    1 / -0

    5ab3 + 22abc + 10bc is a____________________term.

    Solution

    Trinomial is defined as a polynomial which contains three monomials. The expression  5ab3 + 22abc + 10bc  has three terms or monomials. Hence, it is a trinomial. 

     

  • Question 5
    1 / -0

    Simplify : (a3 − 2a2 + 4a − 5) − (−a3 − 8a + 2a2 + 5)

    Solution

    (a3 − 2a2 + 4a − 5) − (−a3 − 8a + 2a2 + 5) 

    =a3 − 2a2 + 4a − 5 + a3 + 8a − 2a2 − 5 

     =2a3 − 4a2 + 12a − 10

     

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