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Write t for ture and f for false for eac...

Write t for ture and f for false for each of the following:
1. In-x, the constant trem is -1
2. The coefficient of x in` x^2-3x+5` is 3. `(5x-7)-(3x-5)=2x-12`
4. `(3x+5y)(3x-5y)=(9x^2-25y^2)`
5. If a=2 and b=`1/2` then value of `ab(a^2+b^2) is 4.1/4`

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The correct Answer is:
F
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Knowledge Check

  • If 5x + 1/3x = 4, then what is the value of 9x^2 + 1/(25x^2) ?

    A
    `144/125`
    B
    `119/25`
    C
    `174/125`
    D
    `114/25`

  • Given that (5x-3)^(3) + (2x+5)^(3) + 27(4-3x)^(3) = 9(3 - 5x)(2x+5)(3x-4) , then the value of (2x+1) is :

    A
    `-13`
    B
    15
    C
    `-15`
    D
    13

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    The sum of the coefficients in the terms of 2x^2y-3x y^2+4x y is -3 (b) 3 9 (d) 5

    Given that (5x - 3)^3 + (2x + 5)^3 + 27(4- 3x)^3 = 9(3 - 5x)(2x + 5)(3x - 4) , then the value of (2x + 1) is:

    Obtain the different coefficient of the following : (i) (x-1)(2x+5) (ii) (1)/(2x+1) (iii) (3x+4)/(4x+5) (iv) (x^(2))/(x^(3)+1)

    8x+5y=9 3x+2y=4

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