Giải hệ phương trình sau

Giải hệ phương trình sau

Giải hệ phương trình sau:

làm giúp mình câu c ạ

Cho biểu thức P= (\(\dfrac{2}{\sqrt{1+a}}\)+ \(\sqrt{1-â}\)) : (\(\dfrac{2}{\sqrt{1-a^2}}\) +1)

a, rút gọn p

b, tính p khi a = 24/49

c, tính a để p=2

Cho 3 đường thẳng (d1):y=-3x  (d2):y=2x+5  (d3):y=x+4. Chứng minh rằng 3 đường thẳng đồng quy

Write a topic sentence for this paragraph:

_________________________English speakers relaxing at home, for example, may put on kimonos, which is a Japanese word. English speakers who live in a warm climate may take an afternoon siesta on an outdoor patio without realizing that these are Spanish words. In their gardens, they many enjoy the fragrance of jasmine flowers, a word that came into English from Persian. They may even relax on a chaise while snacking on yogurt, words of French and Turkish origin, respectively. At night, they may shampoo their hair and put on pajamas, words from the Hindi language of India.