Question

Translate twise the sum of a and b,subtracted from c2 into algebraic symbols.

a.2a+b-c2
b.c2-2(a+b)
c.2(a+b)-c2
d.c2-2ab​

Answer 1

c)

Explanation:

Can't be b) or d) because you have to substract... from c2, so it's not c2 -... And it has to be c) because in a) you don't have twice the sum of a and b, you only have twice a and than you add b.

So it's c)