Question

Efetue:

a) (5x+1)²
b)(4y-3)²
c)(6x+4z) (6x-4z)
d) (9x-3y)²

Answer 1

a)(5x+1)×(5x+1)
25x^2+5x+5x+1
25^2+10x+1

b) (4y-3)×(4y-3)
16y^2-12y-12y+9
16y^2-24y+9

c)(6x+4z)×(6x-4z)
36x^2-24xz+24xz-16z
36x^2-16z

d)(9x-3y)(9x-3y)
81x-27xy-27xy+9y^2
81x-54+9y^2