Math, asked by dhanushDhanush2788, 10 months ago

கார‌ணிபடு‌த்துக
i)9x^2+12xy+4y^2
ii)25a^2-10a+1
iii)36m^2-49n^2
iv)x^3-x x^4-16

Answers

Answered by rajveer9570
10

where is the qustion ,,

Answered by steffiaspinno
1

விளக்கம்:

(i)  9 x^{2}+12 x y+4 y^{2}\\ ன் காரணி

     a^{2}+2 a b+b^{2}=(a+b)^{2}

9 x^{2}+12 x y+4 y^{2}\\ =(3 x+2 y)^{2}      

\text { (ii) } 25 a^{2}-10 a+1   ன் காரணி

a^{2}-2 a b+b^{2}=(a-b)^{2}

  25 a^{2}-10 a+1 =(5 a)^{2}-2(5 a)(1)+1^{2}\\=(5 a-1)^{2}            

\text { (iii) } 36 \mathrm{m}^{2}-49 \mathrm{n}^{2}  ன் காரணி

a^2- b^{2}=(a+b)(a-b)\right]\\\end{aligned}

                     =(6 m)^{2}-(7 n)^{2}

 36 \mathrm{m}^{2}-49 \mathrm{n}^{2} \begin{aligned}=&(6 m+7 n)(6 m-7 n)\\\end{aligned}      

\left(\text { iv) } x^{3}-x=x\left(x^{2}-1\right)\right.  ன் காரணி

a^2- b^{2}=(a+b)(a-b)\right]\\\end{aligned}

           =x\left(x^{2}-1^{2}\right)

           =x(x+1)(x-1).

x^{4}-16=x^{4}-2^{4}     ன் காரணி

            =\left(x^{2}+2^{2}\right)\left(x^{2}-2^{2}\right)

            =\left(x^{2}+4\right)(x+2)(x-2).

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