1401Tamara 1)m^2-10m+25= (m-5)(m-5)

2)х^2-3х-10 = х^2-5х + 2x -10 = x(x-5) + 2(x-5) = (x-5)(x+2)

3)3х^2-8х+5 = 3х^2-5х - 3x +5 =  = x(3x-5) -(3x-5) = (3x-5)(x-1)

4)2х+8-х^2= 2х+4 + 4 -х^2=  (4-x^2) + (2x+4) = (2+x)(2-x) + 2(2+x) =

=(2+x)(2 - x +2)=(2+x)(4-x)