d Factorize 4 x 4 + 81 whole square method of factorization

Question 5: Factorize 4 x 4 + 81

Question 5: Factorize 4x^4+81

Factorization exercises — 


Factorize 4 x 4 + 81

Given expression is


Can be written as;

= (2x^2)^2+(9)^2

Adding and subtracting 2(2x^2)(9);


First three terms are of (a+b)^2= a^2+2(a)(b)+b^2. so;


Taking whole square of second term as well;


This is now a^2-b^2-(a+b)(a-b) form, so;





Is the factorization!




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