Question

Упростите выражение
(2x^2-1)^2+(x^2+2)^2
(2x+3)(3x+2)-13(x-1)
(4x+3)^2-(2x-1)(2x+1)

Answer 1

$(2x^2-1)^2+(x^2+2)^2 = 4x^4 - 4x^2 + 1 + x^4+4x^2+4= 5x^4 + 5$

$(2x+3)(3x+2)-13(x-1)= 6x^2+6x+4x+6-13x+13 = 6x^2-3x+19$

$(4x+3)^2-(2x-1)(2x+1)= 16x^2+24x+9 - 4x^2-2x+2x+1 = 12x^2+24x+10$