Question

Очень срочно 3m^2n^4+12m^6n^7= 12x^3×y^2+24xy^3= (2x^2+7)^2= (3x-9)^2= (64x^2-25y^2)=

Answer 1

3m²n⁴+12m⁶n⁷=3m²n⁴(1+4m⁴n³);
12x³y²+24xy³=12xy²(x²+2y);
(2x²+7)²=4x⁴+28x²+49;
(3x-9)²=9x²-54x+81;
(64x²-25y²)=(8x-5y)(8x+5y)

Answer 2

1.3m^2n^4(1+4m^4n^3)
2.4x^4 +28x^2+49 
3.9x^2 -54x +81=x^2 -6x +9
4.(8x-5y)(8x+5y)