填上适当的数,使下面各等式成立:
(1)x2+3x+_______=(x+________)2;
(2)_______-3x+=(3x_______)2;
(3)4x2+_____+9=(2x________)2;
(4)x2-px+_______=(x-_______)2;
(5)x2+x+_______=(x+_______)2.
填上适当的数,使下面各等式成立:
(1)x2+3x+_______=(x+________)2;
(2)_______-3x+=(3x_______)2;
(3)4x2+_____+9=(2x________)2;
(4)x2-px+_______=(x-_______)2;
(5)x2+x+_______=(x+_______)2.