Question

разложите на множители 5х^2+20х+20

Answer 1

$5 x^{2} +20x+20=5( x^{2} +4x+4)=5( x^{2} +2*2x+ 2^{2} )=5(x+2)^{2}$=5(x+2)(x+2)

Answer 2

5х² +20х +20 = 5х² +10х +10х +20 = (5х² +10х) +(10х +20) = 5х(х +2) +10(х+2) =

(х+2)(5х+10) = 5(х+2)(х+2) = 5(х+2)²