$(3x - 1)(3x + 4)$ નું વિસ્તરણ કરો.

  • A
    $9x^2 + 9x - 4$
  • B
    $9x^2 + 15x - 4$
  • C
    $9x^2 - 9x - 4$
  • D
    $9x^2 + 12x - 4$

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$4 x^{2}+9 y^{2}+49 z^{2}-12 x y+42 y z-28 z x$ ના અવયવ પાડો.

નીચેનો ગુણાકાર શોધો :
$(2 x-y+3 z)(4 x^{2}+y^{2}+9 z^{2}+2 x y+3 y z-6 x z)$

Difficult
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ઘનનું વાસ્તવિક ગણતરી કર્યા વગર,નીચેનાની કિંમત શોધો: $(-12)^{3} + (7)^{3} + (5)^{3}$

$(5 x+3)(5 x-3) = \dots$

અવયવ પાડો $: 8 x^{3}+y^{3}+27 z^{3}-18 x y z$

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