Question

разложите на множители.....

Answer 1

3c²x-30cx+300x=3x(c²-10c+100)=3x(c-10)²
2x³-3x²-50x+75=(2x³-50x)+(-3x²+75)=
2x(x²-25)-3(x²-25)=(x²-25)(2x-4)=(x-5)(x+5)(2x-4)

Answer 2

$3c^2x-30cx+300x=3x(c^2-10c+100)=3x*\frac{c^3+10^3}{c+10};\\\\2x^3-3x^2-50x+75=2x(x^2-25)-3(x^2-25)=\\(x^2-25)(2x-3)=(x-5)(x+5)(2x-3);\\\\(49x^2+70x+25)-36y^2=(7x+5)^2-36y^2=\\(7x-6y+5)(7x+6y+5).$