Question

desenvolva:por favor me ajuda
a)(2x+2)²

b)(4x+6)²

c)(5x+y)²

d)(6x+4)²

e)(x-y)²

f)(2x+9)²

g)(5y+5)²

h)(10xy+5)²

Answer 1

seguem as repostas, depois só ver se o prof. quer que simplifique.
a) (2x+2) . (2x+2) =4x²+4x+4x+4 =  4x²+8x+4
b) (4x+6) . (4x+6) = 16x²+24x+24x+36 = 16x²+48x+36
c) (5x+y) . (5x+y) = 25x²+5xy+5xy+y²= 25x²+y²+10xy
d) (6x+4) . (6x+4) = 36x²+24x+24x+16 = 36x²+48x+16
e) (x-y).(x-y) = x²-xy-xy+y² = x²+y²-2xy
f) (2x+9).(2x+9) = 4x²+18x+18x+81 = 4x²+36x+81
g) (5y+5) . (5y+5) = 25y²+25y+25y+25 = 25y²+50y+25
h) (10xy+5) .(10xy+5) = 100x²y²+50xy+50xy+25 = 100x²y²+100xy+25