Question

Simplifique as expressões.
A) 7x²+2(x²-1)
B) 10-4(x-3)+5
C) -9(2x-1)+15x
D) 0,25(4x-100)+7x
E) 3a²-a(2a-7)+1
F) 5(1/5+x)-3x-10

Answer 1

9x^2-2
-4x+27
-3x+9
8x-25
a^2+7a+1
2x-9