Question

pana mâine!!!!!!!!!!!!!!

Answer 1

a) (x+7)²=x²+14x+49

b) (2x-5)²=4x²-20x+25

c)  (3x-1)²=9x²-6x+1

d) (4x+3)²=16x²+24x+9

e) (2x-7y)²=4x²-28xy+49y²

f) (3x+4y)²=9x²+24xy+16y²

g) (2a-5b)²=4a²-20ab+25b²

h) (3x-2y)²=9x²-12xy+4y²

i) (2-4x)²=4-16x+16x²

j) (4x+y)²=16x²+8xy+y²

k) (3-x)²=9-6x+x²

l) (3c-7)²=9c²-42c+49