(1)分解因式:①4a^2+4a-8②3x-12x^3 (2)解方程:(48x+36)(57x+39)-(57x+45)(48x+36)=0

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(1)分解因式:①4a^2+4a-8②3x-12x^3 (2)解方程:(48x+36)(57x+39)-(57x+45)(48x+36)=0

(1)分解因式:①4a^2+4a-8②3x-12x^3 (2)解方程:(48x+36)(57x+39)-(57x+45)(48x+36)=0
(1)分解因式:①4a^2+4a-8②3x-12x^3 (2)解方程:(48x+36)(57x+39)-(57x+45)(48x+36)=0

(1)分解因式:①4a^2+4a-8②3x-12x^3 (2)解方程:(48x+36)(57x+39)-(57x+45)(48x+36)=0
1:4a²+4a-8=4(a²+a-2)=4(a-1)(a+2)
2:3x-12x³=3x(1-4x²)=3x(1+2x)(1-2x)
3::(48x+36)(57x+39)-(57x+45)(48x+36)=0
(48x+36)(57x+39-57x-45)=0
(48x+36)(-6)=0
48x+36=0
x=-3/4

①4(a+2)(a-1)
②3x(1-2x)(1+2x)
(2)36(4x+3)(19x+13)-36(4x+3)(19x+15)=0
-72(4x+3)=0
x=-3/4

①4a^2+4a-8
=4(a-1)(a+2)
②3x-12x^3
=3x(1-2x)(1+2x)
(48x+36)(57x+39)-(57x+45)(48x+36)=0
(48x+36)(57x+39-57X-45)=0
x=-3/4