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Hence factorize completely the expression 9x3y2 - 4xy4

Mathematics

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Answer

xy2(3x−2y)(3x+2y)xy^2(3x - 2y)(3x + 2y)

Step-by-step solution

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Ili kugawa usemi 9x3y2−4xy49x^3y^2 - 4xy^4, tutatafuta kigezo cha kawaida kikubwa (GCF) kwanza, kisha tutatumia tofauti ya miraba.

  1. Tafuta kigezo cha kawaida kikubwa (GCF) cha maneno yote mawili.

    Maneno ni 9x3y29x^3y^2 na 4xy44xy^4.

    • Kwa nambari (coefficients): GCF ya 9 na 4 ni 1.
    • Kwa xx: GCF ya x3x^3 na xx ni xx.
    • Kwa yy: GCF ya y2y^2 na y4y^4 ni y2y^2. Hivyo, GCF ya usemi mzima ni xy2xy^2.
  2. Toa GCF kutoka kwa kila neno.

    9x3y2−4xy4=xy2(9x2−4y2)9x^3y^2 - 4xy^4 = xy^2(9x^2 - 4y^2)
  3. Angalia usemi ndani ya mabano.

    Usemi 9x2−4y29x^2 - 4y^2 ni tofauti ya miraba, ambayo inaweza kugawanywa kwa kutumia fomula a2−b2=(a−b)(a+b)a^2 - b^2 = (a-b)(a+b).
    Hapa, a2=9x2  ⟹  a=9x2=3xa^2 = 9x^2 \implies a = \sqrt{9x^2} = 3x.
    Na b2=4y2  ⟹  b=4y2=2yb^2 = 4y^2 \implies b = \sqrt{4y^2} = 2y.
    Kwa hiyo, 9x2−4y2=(3x−2y)(3x+2y)9x^2 - 4y^2 = (3x - 2y)(3x + 2y).

  4. Unganisha GCF na matokeo ya ugawaji wa tofauti ya miraba.

    xy2(9x2−4y2)=xy2(3x−2y)(3x+2y)xy^2(9x^2 - 4y^2) = xy^2(3x - 2y)(3x + 2y)

    Usemi uliogawanywa kikamilifu ni:

    xy2(3x−2y)(3x+2y)xy^2(3x - 2y)(3x + 2y)
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