Question

Поможіть будь ласка!!!

Answer 1

Ответ:

1)
1. q³+27 = (q+3)(q²-3q+9)
2. n³-64 = (n-4)(n²+4n+16)
3. 8a³+1 = (2a+1)(4a^2-2a+1)

2)
1. (a+2)(a^2-2a+4) - a(a²-5) = 5a+8
2. (b-3)(b²+3b+9) - b(b-3)(b+3) = 9(b-3)

3)
(x-4)(x²+4x+16) = x³-8x
x³+4x²+16x-4x²-16x-64 = x³-8x
x³+16x-16x-64 = x³-8x
x³-64 = x³-8x
x = 8