Question

36x^2-84xy+49y^2
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Answer 1

$\large{\mathcal{\blue{Answer}}}$

$36x {}^{2} - 84xy + 49y {}^{2} \\ = (6x) {}^{2} - 2(6x)(7y) + (7y) {}^{2} \\ = (6x {}^{2} - 7y) {}^{2}$

Answer 2

Answer:

(6x-7y)^2

Step-by-step explanation:

36x^2-42xy-42xy+49y^2

6x(6x-7y)-7y(6x-7y)

(6x-7y)(6x-7y)

(6x-7y)^2