Question

Va rog sa ma ajutati

Answer 1

a)x^2 + 6x + 9 + x^2 + 4x - 5 = 2x^2 + 10x + 4 = 2(x^2 + 5x + 2)

b)5x^2 + 10x - x^2 - 4x - 4 = 4x^2 + 6x - 4 = 2(2x^2 + 3x - 2)

c)x^2 - 5x + 25/4 - x^2 - 5x - 25/4 = -10x

d)2(x^2 + x + 1/4) - 3(x^2 - x + 1/4) = 2x^2 + 2x + 1/2 - 3x^2 + 3x - 3/4 = -x^2 + 5x - 1/4

e)3x^2 - 2rad3x + 1 - 3x^2 - 6rad6x - 18 = -2rad3x - 6rad6x - 17

f)(x^2 + 4x + 4)(x+2) = x^3 + 2x^2 + 4x^2 + 8x + 4x + 8 = x^3 + 6x^2 + 12x + 8