Answer:
[tex]36y {}^{2} - 84y + 49 \\ = 6 {}^{2} y {}^{2} - 2.6.7y + 7 {}^{2} \\ = (6y - 7) {}^{2} [/tex]
[tex]ab {}^{3} c + 3a {}^{2} b {}^{2} c {}^{2} \\ = acb {}^{3} + 3a {}^{2} b {}^{2} c {}^{2} \\ = a(cb {}^{2} b + 3ab {}^{2} c {}^{2} \\ = acb {}^{2} (b + 3ac)[/tex]
[tex]x {}^{3} - 27y {}^{3} \\ = x {}^{3} + ( - 3y) {}^{3} \\ = (x - 3y)(x {}^{2} + 3xy + ( - 3y) {}^{2} ) \\ = (x - 3y)( {2} + 3xy + 9y {}^{2} )[/tex]
(x-3y)(x^2+3xy+9y^2)
sana makatulong salamat
#skeptron correct me if I'm wrong
