Question

C(2a-2c)+a(3c-a)-2(a-c²)еслиa=-0,1,c=0,7,то

Answer 1

Раскрываем скобки
2ас-2с²+3ас-а²-2а+2с²= 5ас-2а-а²=а(5с-2-а)   подставляем
-0,1(5·0,7-2+0,1)= - 0,16

Answer 2

To evaluate the expression when a = -0.1 and c = 0.7, we can substitute these values into the given expression and simplify it:

C(2a - 2c) + a(3c - a) - 2(a - c²)

Substituting a = -0.1 and c = 0.7:

C(2(-0.1) - 2(0.7)) + (-0.1)(3(0.7) - (-0.1)) - 2((-0.1) - (0.7)²)

Simplifying further:

C(-0.2 - 1.4) + (-0.1)(2.1 + 0.1) - 2(-0.1 - 0.49)

C(-1.6) + (-0.1)(2.2) - 2(-0.59)

-1.6C - 0.22 + 1.18

-1.6C + 0.96

Therefore, the simplified expression when a = -0.1 and c = 0.7 is -1.6C + 0.96.