Question

разложите на множители:

а)49-х^2

b)9m^2-225n^2

c)36х^2y^2-1

d)t^4q^6-64P^2

f)144-(m-4)^2

Answer 1

$49-x^2=(7-x)(7+x)\9m^2-225n^2=(3m-5n)(3m+5n)\36x^2y^2-1=(6xy-1)(6xy+1)\t^4q^6-64P^2=(t^2q^3-8P)(t^2q^3+8P)\144-(m-4)^2=(12-(m-4))(12+(m-4))=\=(12-m+4)(12+m-4)=(16-m)(8+m)$