Question

2(a+1)-4(a-2). a= -0,1

Answer 1

2а+2-4a+8 = - 2a+10 = 0.2+10 =10.2

Answer 2

To solve the expression $2(a+1) - 4(a-2)$ for $a = -0.1$, we substitute $a$ with $-0.1$ and calculate the result:

$2(-0.1 + 1) - 4(-0.1 - 2)$

$= 2(-0.1 + 1) - 4(-0.1 - 2)$ $= 2(0.9) - 4(-2.1)$ $= 1.8 + 8.4$ $= 10.2$

Therefore, when $a = -0.1$, the expression $2(a+1) - 4(a-2)$ equals $10.2$.