Question

Решить:
75-3,75=
$frac{2}{3}-2$
$5frac{1}{2}* frac{2}{11}$
$frac{1}{3}+ frac{1}{5}$
$frac{2}{3}- frac{2}{15}$
По формуле квадрат суммы, квадрат разности.
(c+d)²=
(2+x)²=
(x-y)²=
(x+1)²=
(q+2p)²=
(6a-4b)²=
(3x+2y)²=
(5z-1)²=

Answer 1

c^2+2cd+d^2
4+4x+x^2
x^2-2xy+y^2
x^2+2x+1
q^2+4qp+4p^2
36a^2-48ab+16b^2
9x^2+12xy+4y^2
25z^2-10z+1

Answer 2

75-3,75=71,25
2/3-2=-1.1/3
5.1/2*2/11=11/2*2/11=1
1/3+1/5=8/15
2/3-2/15=(10-2)/15=8/15
(с+d)^2=c^2+2cd+d^2
(2+х)^2=4+4х+х^2
(х-у)^2=х^2-2ху+у^2
(х+1)^2=х^2+2х+1
(g+2p)^2=g^2+4gp+4p^2
(6а-4в)^2=36а^2-48ав+16в^2
(3х+2у)^2=9х^2+12ху+4у^2
(5z-1)^2=25z^2-10z+1