Question

calcule os produtos:a)(X-4)²= b)(2x-4)²= c)(x-5)²= d)(3x-8)²= e)(4x-6y)²= f)(6x -5)²= g)(8-9y)²= h)(7-10x)²=

Answer 1

a)(x-4)²=
(x-4)(x-4)=
x²-4x-4x+16=
x²-8x+16
b)(2x-4)²
(2x-4)(2x-4)=
4x-8x-8x+16=
4x-16x+16=
-12x+16
c)(x-5)²=
(x-5)(x-5)=
x²-5x-5x+25=
x²-10x+25
d)(3x-8)²=
(3x-8)(3x-8)=
9x-24x-24x+64=
9x-48x+64=
-39x+64
e)(4x-6y)²=
(4x-6y)(4x-6y)=
16x-24xy-24xy+36y=
16x-48xy+36y
f)(6x-5)²=
(6x-5)(6x-5)=
36x-30x-30x+25=
36x-60x+25=
-24x+25
g)(8-9y)²=
(8-9y)(8-9y)=
64-72y-72y-81y=
64-144y-81y=
64-225y
h)(7-10x)²=
(7-10x)(7-10x)=
49-70x-70x-100x=
49-240x