Question

разложите на множители : (3х+4)^2-9х^2+16

Answer 1

$(3x+4)^2-9x^2+16=\=9x^2+24x+16-9x^2+16=24x+32=8(3x+4)$

Answer 2

(3х+4)^2-9х^2+16 = (3x+4)^2 + (4-3x)(4+3x) = (4+3x)^2 + (4-3x)(4+3x)=
= (4+3x)(4+3x+4-3x)=8*(4+3x)

2 способ:
(3х+4)^2-9х^2+16 =9x^2+24x+16-9x^2+16 = 24x+32=8(3x+4)