Question

Simplify 2( x² -3x) - 5(7x-4) and then find the value when x= -2.​

Answer 1

Answer:

2(x²-3x) -5(7x-4)

2(4+6) -5(56)

2(10) -5(56)

20-280

-260

Answer 2

Answer:

2(x²-3x)-5(7x-4).

2x²-6x-35x+20. (Because -×-=+).

2x²-41x+20. (Because -×-=+ & largest number is important).

x=-2.

2(-2)²-41(-2)+20.

2(4)+82+20. (Because -×-=+).

8+82+20.

110.

I think this is your answer.