Question

Wzory skróconego mnożenia. PILNEEE !

A) (1/2a+5)^2

b) (o,2x+y)^2

c) (2x+5y)^2

d) (2,5x+ 1/3)^2

e) (2/5x+1/4)^2

f) (1,5a+1,8b)^2

g) (4y+z^2)^2

h) (3/4a+3b^2)^2

i) (-5x+3)^2

j) (3/5a+2/7)^2

k) (1 1/4x+2y)^2

l) ( 3 1/3a+ 2 1/2b)^2

Answer 1

a) (1/2a + 5)^2 = 1/4a^2 + 5a + 25

b) (0,2x + y)^2 = 0,04x^2 + 0,4xy + y^2

c) (2x + 5y)^2 = 4x^2 + 20xy + 25y^2

e) (2/5x+1/4)^2 = 4/25x^2 + 2/10x + 1/16

f) (1,5a+1,8b)^2 = 2,25a^2 + 2,7ab + 3,24b^2

g) (4y+z^2)^2 = 16y^2 + 8yz^2 + z^4

h) (3/4a+3b^2)^2 = 9/16a^2 + 9/2ab^2 + 9b^4

i) (-5x+3)^2 = 25x^2 - 30x + 9

j) (3/5a+2/7)^2 = 9/25a^2 + 12/35a + 4/49

k) (1 1/4x+2y)^2 = 25/16x^2 + 5xy + 4y^2

l) ( 3 1/3a+ 2 1/2b)^2 = 100/9a^2 + 10/3ab + 1/4b^2