Question

ДАБ 100 БАЛЛОВ!!! ПОМОГИТЕ ПОЖАЛУЙСТА!!!​

Answer 1

$(2m^4-3n^2)^2=4m^8-12m^4n^2+9n^4\\(2m-3n)(2m+3n)=4m^2-9n^2\\(x-19)(x+19)=x^2-361\\(-4n^3+5)(3n^3+5)=25-16n^6\\\\36x^2+36xy+9y^2=(6x+3y)^2\\2,89x^2-0,81y^2=(1,7x-0,9y)(1,7x+0,9y)$

уравнение

$(6x-1)^2-(4x-7)(9x+1)=0\\36x^2-12x+1-(36x^2-63x+4x-7)=0\\(-12+63-4)x+(1+7)=0\\47x=-8\\x=-\frac{8}{47}$

$(2x+3)(3-2x)-(2x-5)^2-10x=(9-4x^2)-(4x^2-20x+25)-10x=-8x^2+20x-16$