Question:

Factor completely ---plz help?

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factor completely

100r^2 +160rp + 64p^2

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  1. it is easy friend (a+b)^2=a^2+b^2+2ab

    dat means a=10 n b=8 n 2ab=2.10.8  


  2. 100r^2 +160rp + 64p^2

    factor:

    100r^2 = (10r) (10r)

    64p^2 = (8p) (8p)

    (10r + 8p) (10r + 8p) -----> ans

  3. 100r² + 160rp + 64p² is of the form (a + b)² = a² + 2ab + b². So, it can be written as:

    (10r + 8p)².....

    OR

    100r² + 160rp + 64p²:

    => 4(25r² + 40rp + 16p²),

    => 4 { (5r)² + [2 × (5r) × (4p)] + (4p)² },

    => 4(5r + 4p)².... Hope that helped.....


  4. (10r)^2+2x 10r x 8p +(8p)^2 [by using the formula:(a+b)^2=a^2+b^2+2ab]

    =(10r+8p)^2        

    =4(5r+2p)^2

    :))

  5. (10r + 8p)(10r + 8p)

    2(5r + 4p) times 2(5r + 4p)

    4(5r + 4p)(5r + 4p)

  6. 100r^2 +160rp + 64p^2

    = 4(25r^2 + 40rp + 16p^2)

    = 4{(5r)^2 + 2*(5r)*(4p) + (4p)^2}

    = 4(5r + 4p)^2


  7. hi kid

    (10r+8p)^2

  8. 100r^2 + 160rp + 64p^2

    4(25r^2 + 40rp + 16p^2)  (taking 4 as common from the given question)

    4{(5r)^2 + 2(5r)(4p) + (4p)^2} [with the help of{(a+b)^2 =a^2 + b^2 +2ab}]

    4(5r + 4p)^2    

    4(5r + 4p)(5r + 4p)

          done done done

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