Question

Разложить:
1) (х – 3)²• 8 – х²
2) (4х²+ 3²) – х²+ 9

Answer 1

1) (x-3)^2*8-x^2 = 8*(x-3)^2-x^2 = 8*(x^2-6x+9)-x^2 = 8x^2-48x+72-x^2 = 7x^2-48x+72

2) (4x^2+3^2)-x^2+9 = 4x^2+3^2-x^2+9 = 3x^2+3^2+9 = 3*(x^2+3+3) = 3*(x^2+6)