kak tolong bantu jawab kak pelis kak

1. a. 3.3.3 = 27
    b. (3x)^2 = 3^2 . x^2 = 9x^2
    c. (-3p)^3 = (-3)(-3)(-3)p^3 = -27p^3
2. a. (x + 2)^2 = (x + 2)(x + 2) = x^2 + 2x + 2x + 4 = x^2 + 4x + 4
    b. (a - 1)^2 = (a - 1)(a - 1) = a^2 - 1a - 1a + 1 = a^2 -2a + 1
3. a. (x + 7)^2 = x^2 + 7x +7x + (7.7) = x^2 + 14 + 49
4. a. (x + 1)^2 + (x + 3)^2 = (x + 1)(x + 1) + (x + 3)(x + 3)
                                         = (x^2 + 1x + 1x + 1 ) + (x^2 + 3x + 3x + 9)
                                         = x^2 + x^2 + 1x + 1x + 3x + 3x + 1 + 9
                                         = 2x^2 + 8x +10
                                         -------------------------- : dibagi 2
                                         = x^2 + 4x + 5